A push factor is best defined as something that causes people to leave their country. any legal restriction on immigration. any hardship immigrants face in a new country.something that makes people want to leave a place or escape from a particular situation: Instead of a fruitless attempt to eliminate illegal immigration, rich countries could focus on reducing the push factors that force some to flee - chiefly poverty and persecution. Compare. pull factor.
I would say that this can be seen in two ways:
a struggle of two world views: capitalism vs communism
or
a struggle of two superpowers to have control over the other countries: the US and the Soviet Union (as it can be argued that the two countries were not satisfied that other countries had the same system as they, they also sought control over them).
