Explanation

Barack Obama was the first black president in the history of the United States of America (USA)

Obama served as the 44th president of the US.

Obama was US president from 2009 to 2017.

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Explanation

Joe Biden became the 46th and current president of the United States 

Important Question "Joseph Robinette Biden Jr":

Joseph Robinette Biden Jr. is an American politician

Born: November 20, 1942

Joe Biden was inaugurated on January 20, 2021.

Joe Biden belongs to the state of Pennsylvania

Donkey

Explanation

The United States criminalized the international slave trade: 1808

Slavery was made unconstitutional: 1865

Note: American Civil War started in 1861 and ended in 1865.

Explanation

Abraham Lincoln became the United States 16th President States from 1860 until his assassination in 1865.

Abraham Lincoln's Born: February 12, 1809, Hodgenville, Kentucky, U.S.

Abraham Lincoln Died: on April 15, 1865 (aged 56) in Washington,

Abraham Lincoln's  Manner of death: Assassination (gunshot wound to the head)

Abraham Lincoln's  Resting Place:  Lincoln Tomb

Explanation

Jos Biden is the 46th and current president of the United States.

Assumed office: January 20, 2021

Vice President: Kamala Harris

Preceded by: Donald Trump

Explanation

 The first Asian Secretary-General of the United Nations was U Thant

From Burma (now Myanmar)

Served from 1961 to 1971

He held the office for a record 10 years and one month.

Explanation

He was the 1st Prime Minister of Singapore

In office 5 June 1959 – 27 November 1990

Preceded by Office established Lim Yew Hock (as Chief Minister)

Succeeded by: Goh Chok Tong

Political party: People's Action Party

He Died 23 March 2015 (aged 91) in Singapore

Explanation

Temple Trees is the official residence of the Prime Minister of Sri Lanka.

It is located in Colombo, Sri Lanka

Additional information 

 It was owned between 1830 and 1834 by John Walbeoff of the British Civil Service, 

Christopher Elliott M.D. bought the house in 1848.

 In 1856 it was sold to John Philip Green who named it "Temple Trees" 

Explanation

Benito Mussolini was an Italian politician and leader of the National Fascist Party.

He ruled Italy as Prime Minister from 1922 until his ousting in 1943.

He is known for his authoritarian and fascist regime, which allied with Nazi Germany and Japan during World War II.

Mussolini was born in Predappio, Italy in 1883.

He was executed in Milan, Italy in 1945.

Explanation

Benito Mussolini was an Italian politician and leader of the National Fascist Party.

He ruled Italy as Prime Minister from 1922 until his ousting in 1943.

He is known for his authoritarian and fascist regime, which allied with Nazi Germany and Japan during World War II.

Mussolini was born in Predappio, Italy in 1883.

He was executed in Milan, Italy in 1945.