There’s a good source on google if you search this but it’s easy to find on google:)
Answer:
To break the stalemate of trench warfare
Not sure if this is the answer your looking for but one could be They reacted to it harshly, and were suspicious of all immigrants that came to American from a communist country
they are selected when citizens of a nation vote for them to be elected, by popular demand of the people(democracy) i hope that helps
