How did steamships transform immigration?

Choose all that apply during the years of the industrial revolution 1. the average life expectancy decreased 2. the worlds population decreased 3. birth rates decreased 4. the average like expectancy increase

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 w. e.b. dubois wanted to improve the social and economic situation that existed for african americans during the early 19th century?