The March Days massacres took place between 30 March and 2 April 1918 in Baku and adjacent areas of the Baku Governorate.
In May 1918, the leading Musavat party declared independence as the Azerbaijan Democratic Republic (ADR).
The National Army of the Azerbaijan Democratic Republic was created on 26 June 1918.
Azerbaijanis did not surrender their brief independence of 1918–20 quickly or easily when the Bolsheviks invaded in April 1920.
In 1918, the Azerbaijan Democratic Republic proclaimed its independence from the Transcaucasian Democratic Federative Republic, becoming the first secular democratic Muslim-majority state.
In 1918, the government of Musavat adopted the name Azerbaijan after the collapse of the Russian Empire, for the newly established Azerbaijan Democratic Republic.
In June 1919, a documentary The Celebration of the Anniversary of Azerbaijani Independence was premiered in Baku.
On 28 April 1920, the Bolshevik 11th Soviet Red Army invaded Azerbaijan, establishing the Azerbaijan Soviet Socialist Republic.
After the Soviet power was established in 1920, Nariman Narimanov signed a decree nationalizing Azerbaijan's cinema.
In 1920, Azerbaijan was conquered and incorporated into the Soviet Union as the Azerbaijan SSR.
Today Azerbaijani filmmakers are again dealing with issues similar to those faced by cinematographers prior to the establishment of the Soviet Union in 1920.
From 1940 to 1991, the country's name was spelled in Cyrillic script as Азәрбајҹан.
A fifth of all Azerbaijanis fought in the Second World War from 1941 to 1945.
In February 1942, by decree of the Supreme Soviet of the Soviet Union, over 500 workers and employees of the oil industry of Azerbaijan were awarded orders and medals.
A fifth of all Azerbaijanis fought in the Second World War from 1941 to 1945.
According to Soviet data, 100 percent of males and females (ages nine to forty-nine) were literate in 1970.
According to the 1970 census, there were 510,000 ethnic Russians and 484,000 Armenians in Azerbaijan.
In 1989, Armenian was the majority language in the region of Nagorno-Karabakh, spoken by about 76% of the regional population.
In 1990, forest cover was measured as 944,740 hectares (ha).
In 1990, the Supreme Council of the Azerbaijan SSR dropped the words "Soviet Socialist" from the title and restored the flag of the Azerbaijan Democratic Republic as the state flag.
In August 1991, the modern Republic of Azerbaijan proclaimed its independence shortly before the dissolution of the Soviet Union.
In September 1991, the ethnic Armenian majority of the Nagorno-Karabakh region formed the self-proclaimed Republic of Artsakh.
On 18 October 1991, the Supreme Council of Azerbaijan adopted a Declaration of Independence.
On 9 October 1991, the Armed Forces of the Republic of Azerbaijan were created after gaining independence.
After gaining independence in 1991, Azerbaijan became a member of the International Monetary Fund, the World Bank, and other financial institutions.
From 1940 to 1991, the country's name was spelled in Cyrillic script as Азәрбајҹан.
In 1991, after Azerbaijan gained its independence from the Soviet Union, the first Baku International Film Festival East-West was held in Baku.
Since independence in 1991, the government has taken measures to preserve the environment of Azerbaijan.
In 1992, the National (now Central) Bank was created based on the Azerbaijan State Savings Bank.
In 1993, democratically elected President Abulfaz Elchibey was overthrown by a military insurrection led by Colonel Surat Huseynov.
Since 1993, the ruling New Azerbaijan Party has been in power, accused of authoritarianism under presidents Heydar Aliyev and his son Ilham Aliyev.
The Aliyev political family and the New Azerbaijan Party (Yeni Azərbaycan Partiyası, YAP) established by Heydar Aliyev have continuously ruled since 1993.
In September 1994, a 30-year contract was signed between SOCAR and 13 oil companies.
By the end of the hostilities in 1994, Armenians controlled 14–16 percent of Azerbaijani territory, including Nagorno-Karabakh.
In 1994, Surat Huseynov attempted a military coup against Heydar Aliyev but was arrested and charged with treason.
The structural formation of the political system was completed by the adoption of the constitution on 12 November 1995.
By 2012, the GDP of Azerbaijan had increased 20-fold from its 1995 level.
In 1995, another coup was attempted against Aliyev by Rovshan Javadov, resulting in Javadov's death and the disbanding of Azerbaijan's OMON units.
On 6 November 1996, Bahrain was the most recent country to recognize Azerbaijan's independence from the collapsing Soviet Union.
The Security Council was established on 10 April 1997 as a deliberative body under the president.
In October 1998, Aliyev was re-elected for a second term.
On June 16, 1999, the provision determining the legal status of local state administration on local executive authority was adopted.
In December 2000, former President Heydar Aliyev signed a decree proclaiming 2 August to be the professional holiday of filmmakers of Azerbaijan.
National protection of the environment accelerated after 2001 when the state budget increased through revenues provided by the Baku–Tbilisi–Ceyhan pipeline.
Since 2001, Azerbaijan is a member of the Council of Europe and maintains good relations with the European Union.
In 2002, the Azerbaijani merchant marine had 54 ships.
In 2002, the government established the Ministry of Transport with a broad range of policy and regulatory functions. Also in 2002, Azerbaijan became a member of the Vienna Convention on Road Traffic.
Other Christian denominations as of 2002 include Lutherans, Baptists and Molokans.
In 2003, Ilham Aliyev, Heydar Aliyev's son, became President of Azerbaijan when his father died.
In 2003, there were 250 Roman Catholics.
Azerbaijan Women's Volleyball Super League placed fourth at the 2005 European Championship.
On 1 January 2006, a new currency, the new Azerbaijani manat, was launched to cement the economic reforms and erase the vestiges of an unstable economy.
In May 2006, the Baku–Tbilisi–Ceyhan pipeline (BTC) became operational. It extends more than 1,774 km through Azerbaijan, Georgia, and Turkey, designed to transport up to 50 million tons of crude oil annually from the Caspian Sea oilfields to global markets.
On 9 May 2006, Azerbaijan was elected to membership in the newly established Human Rights Council by the United Nations General Assembly.
On 19 June 2006, Azerbaijan's term of office began in the newly established Human Rights Council.
In a 2006–2008 Gallup poll, only 21% of respondents from Azerbaijan stated that religion is an important part of their daily lives.
At the beginning of 2007 there were 4,755,100 hectares of used agricultural area.
The 2007 Q1 inflation rate reached 16.6% in Azerbaijan.
Azerbaijan made its debut appearance at the 2008 Eurovision Song Contest.
In a 2006–2008 Gallup poll, only 21% of respondents from Azerbaijan stated that religion is an important part of their daily lives.
According to the United Nations Development Program Report 2009, the literacy rate is 99.5 percent.
As of 2009, there were 1,397,000 main telephone lines and 1,485,000 internet users in Azerbaijan.
Azerbaijan became European Team Chess Championship winners in 2009, 2013 and 2017.
Azerbaijan's ashiq art was included in the list of Intangible Cultural Heritage by UNESCO in 2009.
Domestic club Araz Naxçivan clinched bronze medals at the 2009–10 UEFA Futsal Cup.
In 2009, Azerbaijan gained third place in the Eurovision Song Contest.
In 2009, Azerbaijan hosted the Rhythmic Gymnastics European Championships.
The ethnic composition of the population according to the 2009 population census: 91.6% Azerbaijanis, 2.0% Lezgins, 1.4% Armenians, 1.3% Russians, 1.3% Talysh, 0.6% Avars, 0.4% Turkish people, 0.3% Tatars, 0.3% Tats, 0.2% Ukrainians, 0.1% Tsakhurs, 0.1% Georgians, 0.1% Jews, 0.1% Kurds, other 0.2%.
In November 2010 the Azerbaijani carpet was proclaimed a Masterpiece of Intangible Heritage by UNESCO.
According to a report by the World Travel and Tourism Council, Azerbaijan was among the top ten countries showing the strongest growth in visitor exports between 2010 and 2016.
Azerbaijan is ranked 57th in the Global Competitiveness Report for 2010–2011.
By 2010, Broad-gauge railways and electrified railways stretched for 2,918 km and 1,278 km respectively. By 2010, there were 35 airports and one heliport.
During the 2010 Parliamentary election, the opposition parties, Musavat and Azerbaijani Popular Front Party, failed to win a single seat.
In 2010, the European Wrestling Championships were held in Azerbaijan.
The Azerbaijan national futsal team reached fourth place in the 2010 UEFA Futsal Championship.
Azerbaijan is ranked 57th in the Global Competitiveness Report for 2010–2011.
Ell and Nikki won the first place at the Eurovision Song Contest 2011 with the song "Running Scared".
In 2011, Azerbaijan hosted the AIBA World Boxing Championships.
In 2011, Azerbaijan was first elected as a non-permanent member of the UN Security Council with the support of 155 countries.
The 2011 population growth-rate was 0.85%.
In June 2012, the president approved a regulation which granted additional powers to local executive authorities, strengthening their dominant position in local affairs.
By 2012, the GDP of Azerbaijan had increased 20-fold from its 1995 level.
From 2012 to 2014, the Azerbaijani leadership made more than 16,000 covert payments from a scheme reported on in April 2017.
In 2012, Azerbaijan constructed a Formula One racetrack.
In 2012, Azerbaijan hosted the Eurovision Song Contest in Baku.
In 2012, Azerbaijan was the host nation for the FIFA U-17 Women's World Cup.
In 2012, Neftchi Baku became the first Azerbaijani team to advance to the group stage of a European competition.
In 2012, construction of the Kars–Tbilisi–Baku railway was completed, aiming to improve transportation between Asia and Europe by connecting railways from China and Kazakhstan to the European railway system via Turkey.
In 2012, rapid growth was forecast for at least five more years in Azerbaijan's Internet sector.
Since 2012 the US Congress sent military aid to Azerbaijan. On 1 July 2021, the US Congress advanced legislation that will have an impact on it.
On February 7, 2013, Azerbaijan National Aerospace Agency launched its first satellite AzerSat 1 into orbit from Guiana Space Centre in French Guiana.
In October 2013, Ilham Aliyev was re-elected to a third term as president.
According to the 2013 Freedom House Freedom of the Press report, Azerbaijan's press freedom status is "not free", and Azerbaijan ranks 177th out of 196 countries.
Azerbaijan became European Team Chess Championship winners in 2009, 2013 and 2017.
Azerbaijan was the main sponsor of Spanish football club Atlético de Madrid during seasons 2013/2014 and 2014/2015.
In 2013, Azerbaijan hosted the F1 Powerboat World Championship.
After several years of decline in press and media freedom, in November 2014, the media environment deteriorated rapidly under a governmental campaign to silence any opposition and criticism.
As of 2014, country's home of Shamkir Chess a category 22 event and one of the highest rated tournaments of all time.
Azerbaijan was the main sponsor of Spanish football club Atlético de Madrid during seasons 2013/2014 and 2014/2015.
From 2012 to 2014, the Azerbaijani leadership made more than 16,000 covert payments from a scheme reported on in April 2017.
In 2014, Azerbaijan hosted the European Taekwondo Championships and the Rhythmic Gymnastics European Championships.
In 2014, Qarabağ became the second Azerbaijani club advancing to the group stage of UEFA Europa League.
In October 2015, a report by an Amnesty International researcher pointed to "...the severe deterioration of human rights in Azerbaijan over the past few years.
According to the Travel and Tourism Competitiveness Report 2015 of the World Economic Forum, Azerbaijan holds 84th place.
Azerbaijan was the main sponsor of Spanish football club Atlético de Madrid during seasons 2013/2014 and 2014/2015.
In 2015, 100% of the forest area was reported to be under public ownership, 0% private ownership and 0% with ownership listed as other or unknown.
In 2015, Azerbaijan had the largest number of journalists imprisoned in Europe, according to the Committee to Protect Journalists.
In 2015, Baku was selected to host the European Games.
According to a report by the World Travel and Tourism Council, Azerbaijan was among the top ten countries showing the strongest growth in visitor exports between 2010 and 2016, In addition, Azerbaijan placed first (46.1%) among countries with the fastest-developing travel and tourism economies, with strong indicators for inbound international visitor spending in 2016.
In 2016, Azerbaijan had 0.8 global hectares of biocapacity per person, and used 2.1 global hectares of biocapacity per person.
In 2016, Azerbaijan hosted its first Formula One Grand Prix.
In 2016, Azerbaijan was the host country for the World Chess Olympiad.
In April 2017, The Guardian reported that "Azerbaijan's ruling elite operated a secret $2.9bn (£2.2bn) scheme to pay prominent Europeans, buy luxury goods and launder money through a network of opaque British companies.
On 14 September 2017, Azerbaijan extended the agreement on development of ACG until 2050.
Azerbaijan became European Team Chess Championship winners in 2009, 2013 and 2017.
Azerbaijan hosted the Azerbaijan Grand Prix since 2017.
In 2017, Baku hosted the fourth Islamic Solidarity Games.
In 2017, after beating Copenhagen 2–2 (a) in the play-off round of the UEFA Champions League, Qarabağ became the first Azerbaijani club to reach the group stage.
In April 2018, Aliyev secured his fourth consecutive term in an election boycotted by the main opposition parties.
Azerbaijan had a 2018 Forest Landscape Integrity Index mean score of 6.55/10, ranking it 72nd globally out of 172 countries.
Azerbaijan qualified for every Grand Final up until the 2018 edition of the contest, entering with X My Heart by singer Aisel.
In January 2019, the 50.1% of the total population was female.
In 2019, Azerbaijan hosted the European Youth Summer Olympic Festival.
On 27 September 2020, clashes in the unresolved Nagorno-Karabakh conflict resumed along the Nagorno-Karabakh Line of Contact.
As of 2020, Azerbaijan spent $2.24 billion on its defense budget, which amounted to 5.4% of its total GDP.
Following the Second Nagorno-Karabakh War in 2020, the seven districts and parts of Nagorno-Karabakh were returned to Azerbaijani control.
On 1 July 2021, the US Congress advanced legislation that will have an impact on the military aid that Washington has sent to Azerbaijan since 2012.
As of 2021, Azerbaijan had 126,000 active personnel in its armed forces.
Azeriqaz, a sub-company of SOCAR, intends to ensure full gasification of the country by 2021.
As of March 2022, 52.9% of the population of 10,164,464 is urban, with the remaining 47.1% being rural.
In September 2023, Azerbaijan launched an offensive against the breakaway Republic of Artsakh in Nagorno-Karabakh.
In 2023, an Azerbaijani offensive ended the Republic of Artsakh and resulted in the flight of Nagorno-Karabakh Armenians.
The offensive in September 2023 resulted in the dissolution and reintegration of Artsakh on 1 January 2024.
Freedom House ranked Azerbaijan 7/100 on Global Freedom Score in 2024, calling its regime authoritarian.
In 2024, Azerbaijan was ranked 95th in the Global Innovation Index.
On 14 September 2017, Azerbaijan extended the agreement on development of ACG until 2050.