Vida de personas que ingresan a europa ilegalmente

Which is the best example of a primary source ducument useful in the study of history ?

Many scandinavians immigrated to the united states as a result of the homestead act of 1862, which offered land to independent farmers. this is an example of a push factor, because turmoil in scandinavia encouraged people to leave. push factor, because a new opportunity encouraged people to come to the us. pull factor, because turmoil in scandinavia encouraged people to leave. pull factor, because a new opportunity encouraged people to come to the us.

How did the beliefs of the roman catholics differ from the eastern orthodox form of christianity?