Why were Southerners upset about California’s application to join the Union

Although a number of things brought about world war one there was one even that push to europe over the edge. what was that event?

How are the republican and democratic presidential candidates chosen? a. they are nominated by their state governments. b. each is nominated by his or her respective party. c. each is chosen by the governor of his or her home state. d. they are chosen by the house of representatives.

What is a characteristic of hunter-gatherer societies?