World History - Study Mode

[#396] When were concave spectacles invented?
Correct Answer

(A) 1286

Explanation

Solution: The first glasses were invented in Italy in the late 13th century. Some people date the invention of glasses to 1286, though some estimate put the invention of glasses somewhere between 1268 and 1300.

[#397] When did the second Russian revolution start
Correct Answer

(C) October, 1917

Explanation

Solution: On November 6 and 7, 1917 (or October 24 and 25 on the Julian calendar, which is why the event is often referred to as the October Revolution), leftist revolutionaries led by Bolshevik Party leader Vladimir Lenin launched a nearly bloodless coup d'état against the Duma's provisional government.

[#398] During which US President period, the Cuban Missile Crisis conflict was occurred
Correct Answer

(D) John F. Kennedy

Explanation

Solution: The Kennedy administration had been publicly embarrassed by the failed Bay of Pigs Invasion in May 1961, which had been launched under President John F.

[#399] Who defeated Hannibal at Battle of Zama?
Correct Answer

(C) Scipio Africanus

Explanation

Solution: The Battle of Zama—fought in 202 BC near Zama —marked the end of the Second Punic War. A Roman army led by Publius Cornelius Scipio Africanus, with crucial support from Numidian leader Masinissa, defeated the Carthaginian army led by Hannibal.

[#400] When did the Soviet Union disintegrated into Independent Republics?
Correct Answer

(B) 1991

Explanation

Solution: The Union of Soviet Socialist Republics of Soviet Union dissolved into fifteen separate countries in December 1991.