What was china before it became communists nation

The germans were expecting the invasion to land at pas-de-calais,northeast of the actual normandy invasion site. what do you think might have been the advantages of a landing at pas-de-calais? ‍♀️

Which events are correlated but do not necessarily have a causal relationship?

Which of the following is an example of the pull factor known as economic migration? a. better educational opportunities pulling people towards a new country b. mexican laborers entering the us to work in agricultural jobs c. joining family members that are already in a new country d. crop failures driving people away from their country i am unsure on this question, i was thinking b? but i could be wrong.