Explanation

History:

The United States is generally considered to have entered the conflict with the 7 December 1941 surprise attack on Pearl Harbor by the Empire of Japan and exited it with the 2 September 1945 surrender of Japan.

The Japanese attack on the US naval base in Pearl Harbor, Hawaii, led President Franklin Roosevelt to declare war on Japan.

A few days later, Nazi Germany declared war on the United States, and America entered World War II against the Axis powers.

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World War II or the Second World War, was a global war that started from 1939 

The Little Boy type of bomb, was dropped on the Japanese city of Hiroshima on 6 August 1945 during World War II

The Fat Man was dropped on Nagasaki, Japan, on August 9, 1945, at 11:01 AM

the 2nd World War End on 1945

Explanation

Martial law in Taiwan is specifically used to refer to the over 38-year-long consecutive martial law period between 20 May 1949 and 14 July 1987.

Explanation

In Somalia, the security forces killed at least forty al-Shabab militants during a military operation in the Middle Shabelle region in the first week of July 2022.

Explanation

American Civil War started in 1861 between the United States and 11 Southern states that seceded from the Union and formed the Confederate States of America, ended in 1865.

Explanation

On the night of 24 July 1983, anti-Tamil rioting started in the capital city of Colombo and then spread to other parts of the country.

Over seven days, mainly Sinhalese mobs attacked, burned, looted, and killed Tamil civilians

Explanation

The École Polytechnique massacre (French: tuerie de l'École polytechnique), also known as the Montreal massacre, was a 1989 antifeminist mass shooting at the École Polytechnique de Montréal in Montreal, Quebec. 

Explanation

On March 12, 1993, 12 co-ordinated bombs went off in the city, killing 257 and injuring 700 others. The Terrorist and Disruptive Activities (Prevention) Act court has convicted over 100 people in the attacks. Main accused Dawood Ibrahim and Tiger Memon are still at large.

Explanation

The Anuradhapura massacre occurred in Sri Lanka in 1985 and was carried out by the Liberation Tigers of Tamil Eelam.

This was the largest massacre of Sinhalese civilians by the LTTE to date; it was also the first major operation carried out by the LTTE outside a Tamil majority area.

Explanation

The Fourth Anglo-Mysore War began in 1798 

Between the British East India Company and the Kingdom of Mysore, led by Tipu Sultan.

It concluded in 1799 with the defeat of Mysore and the death of Tipu Sultan.

Explanation

Blast, thermal radiation, and prompt ionizing radiation cause significant destruction within seconds or minutes of a nuclear detonation.

The delayed effects, such as radioactive fallout and other environmental effects, inflict damage over an extended period ranging from hours to years