Explanation

The first modern Olympic Games were held in Athens, Greece from April 6 to 15, 1896

43 events in nine sports 

241 athletes from 14 nations 

The United States won the most gold medals (11) 

Greece won the most medals overall (47)

Explanation

Mikhail Gorbachev's key policies were Glasnost and Perestroika,

They were introduced during the 1980s as part of his effort to reform the Soviet Union.

Explanation

Willem Einthoven was a Dutch medical doctor and physiologist.

He is known as the father of electrocardiography

He invented the first practical electrocardiograph (ECG or EKG)

Explanation

PNN stands for Pakistan News Network, 

Explanation

The olive tree is a symbol of peace and friendship 

The use of the olive branch as a symbol of peace in Western civilization

It is used as a symbol in at least the 5th century BC in Greece

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Explanation

1922 novel by Hermann Hesse that deals with the spiritual journey of self-discovery of a man named Siddhartha during the time of the Gautam Buddha.

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

In June 1948, the Soviet Union, under the leadership of Joseph Stalin, blocked the Western Allies' access to Berlin.

It was deep within the Soviet-occupied zone of Germany.

In response, the Western Allies organized the Berlin Airlift to supply the city.

However, it was in 1961, under the leadership of Nikita Khrushchev, that the Soviet Union built the Berlin Wall to:

• Divide Berlin into two parts (East Berlin and West Berlin)
• Stop East German citizens from escaping to the West

Explanation

The 2019–20 Australian bushfire season is named as Black Summer

The fires reached their peak during the summer months, from December 2019 to February 2020.

The extent of Damage:

• By early 2020, the bushfires had ravaged vast areas of Australia,
• burning an estimated 18 million hectares (44.5 million acres),
• destroying over 3,000 homes,
• and killing at least 33 people.

Explanation

Alexander Graham Bell is credited with inventing the first practical telephone in 1876.

Graham Bell made the first-ever telephone call to his partner, Thomas Watson.