Answer:
This historian would find graphical data that exposed information about the causes of European imperialism during that period of time more useful.
Explanation:
During the 19th century, European imperialism was one of the most important and influential economic factors, dominating much of the world economy. For this reason, a historian who was researching the economic systems in force at that time, would find great use in a graph that presented information about imperialism, mainly information that focused on the causes of imperialism at the end of this century.
Answer:It abolished slavery in the United States, and now, with the end of the war, four million African Americans were free. Thousands of former slaves travelled The Emancipation Proclamation declared all enslaved people in areas then under Confederate control free, but in practice, freedom required either slaves reaching Union lines or Union forces reaching their area. As Union forces advanced from January 1, 1863 to June 19, 1865 slaves were freed.
Explanation:
Rome wasn't a naval power until it started conquering the Mediterranean region. After it started conquering the different islands which can be found in this area, this meant that Rome would have to build up its naval firepower as well. They didn't conquer the Mediterranean only through sea though, they were adept and very capable on land as well.