Answer 1
Jews were largely forbidden from leaving the Soviet Union. The movement to allow Jewish emigration from the USSR was active in America and elsewhere in the 1970s and 1980s.
Answer 2
If you are asking about "push factors" that made Jews wish to leave Russia when that was not possible and then escape en masse in the early 1990s when they could, such things included: Workplace discrimination, illegality of their religion, small massacres, deplorable conditions in Russia, inability for social advancement, and being treated as unwanted visitors.
'Russia' was too busy to involve US into a World War I as there was a revolution in Russia at that time.
It entirely depends on where they were leaving from and where they were going to. There were always push and pull factors, but these were different depending on where Jews were being pushed or pulled. The most common push factor was discrimination, often violent or extremely repressive, and the most common pull factor in other nations was, correspondingly, fewer restrictions and less discrimination. If the question is specifically referring to Nazi Germany, please see the Related Question below.
It was probably the growing ban on employment for Jews that forced them to leave Germany at that stage. Moreover, the Nuremberg Laws (1935) made it very clear that the Nazis did not want them. However, many stayed till the 'Kristallnacht' (9 November 1938), after which there was a stampede to get out. Many never made it.
you just push the btton not interested
No. A "push-off" is a noun. The phrase "push off" is slang for depart, leave. Otherwise, the word push is used as a verb and off is an adverb.
they wanted too
reasons people would leave a place
religious persecution
It wasn't the Nuremberg Laws that forced Jews out of Germany, but the endless hailstorm of decrees banning them from one occupation after another.
The Jews ended up attacking the U.S.
In a word: No. Before WWI, Germany had devised a plan to combat the Triple Entente of Britain, France, and Russia. Their plan was called the Schlieffen Plan, after its major architecht. The plan called for a push through Belgium and Luxembourg into northern France, to knock them out of the war quickly. Then, they could focus on Russia alone. In the end, it was Russia who was knocked out of the war first.
Russia pulled out of the war, so the Allies needed help. The Russian Revolution weakened the Allied war effort.