4. What was the civil war between the "Reds"
and the "Whites"? Who was on whose sides?
(forces led by Lenin or led by Tsar Nicholas II).

"Whites" is the expression that covers all the oppositional forces against "Reds" (Bolsheviks and their armed forces). Tsar Nicolas II was not the chief commander of "Whites" because he and his family were executed at the very beginning of the Civil War (July 1918). Civil war started in May 1918 and lasted till 1922. Red army was founded in January 1918 (and initially led by Leon Trotsky). For the Bolshevik government the first ennemy was the old (imperial) military headquarters which was not completely ready to fight against Bolsheviks and, moreover, there was a conviction that Bolsheviks would not stay in power. Monarchy was criticized already before the war and did not have a significant authority. "Whites" is not synonymous with "monarchists". Tsar himself abdicated already in February 1917. "Reds" were led by Lenin and Trotsky. Those who fought against them considered their ideology (inspired by Karl Marx) too radical.

Explanation: Tsar Nicolas did not and could not lead "Whites". He was executed already in July 1918 (by Bolsheviks).

the united states didn't wanted to get involve with other countries probelms

the first historical instance of china engaging in internationalism was during the han dynasty.[1] at the start of the han dynasty, the huns in the north were attacking the frontiers of han and trying to obtain riches. emperor wu of han wanted to gain an alliance with a country called dayuezhi so the two countries could join together and fight against the huns.[2] to obtain this alliance, emperor wu sent zhang qian to the west to establish economic and cultural connections.[2] history records that during the han dynasty there were four primary avenues of contact between china and europe. they included the northern land route, the central land route, the southern sea route, and the far southern sea route.[1] the most famous of these routes is the central land route, or the classical silk road, comprising a network of roads stretching from northwest china to the ports of syria and the black sea, which passed through the oasis of the turkestans and northern persia.[1] the silk road was significant for chinese emperors because it provided dominance over central asia by developing resources and provided new markets for the export of china's most valuable resources.[1]