When comparing presidents of the 1800s tp those of the 1900s and 2000s, modern presidents are more involved in?

When kaitlin served as an intern to the united nations delegation from the united states, she was demonstrating which of the following?

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.

Which was the cause of the rise of the persian empire?