Explanation

The Mesopotamian Civilization is considered one of the oldest civilizations in the world, dating back to around 3500 BCE.

Explanation

The Reformation movement started in 1517.

Explanation

The king during the French Revolution was Louis XVI.

Explanation

The American War of Independence was fought from 1775 to 1783.

Explanation

The 15 republics of the Soviet Union were:

1. Russian Soviet Federative Socialist Republic (RSFSR)
2. Ukrainian Soviet Socialist Republic (UkrSSR)
3. Byelorussian Soviet Socialist Republic (Byelorussian SSR)
4. Uzbek Soviet Socialist Republic (Uzbek SSR)
5. Kazakh Soviet Socialist Republic (Kazakh SSR)
6. Georgian Soviet Socialist Republic (Georgian SSR)
7. Azerbaijani Soviet Socialist Republic (Azerbaijan SSR)
8. Lithuanian Soviet Socialist Republic (Lithuanian SSR)
9. Moldavian Soviet Socialist Republic (Moldavian SSR)
10. Latvian Soviet Socialist Republic (Latvian SSR)
11. Kyrgyz Soviet Socialist Republic (Kyrgyz SSR)
12. Tajik Soviet Socialist Republic (Tajik SSR)
13. Armenian Soviet Socialist Republic (Armenian SSR)
14. Turkmen Soviet Socialist Republic (Turkmen SSR)
15. Estonian Soviet Socialist Republic (Estonian SSR)

Explanation

Norway was neutral during the First World War.

Explanation

The revolutionary behind the Unification of Italy was Giuseppe Garibaldi.

Explanation

The policy used by Bismarck during the Unification of Germany was "Blood and Iron."

Explanation

During the Russian Revolution, the ideology being established and popularized was Marxism, specifically in its communist form.

Explanation

Nicholas II presided as the King during the Russian Revolution.