Hmm. The impact would've been HUGE. Because you're coming face to face with the person you're going to KILL. Sometimes people aren't really affected by death and that's mostly what i think that THESE people are. (For the evidence, I can't see the text but i'm sure you can do something!)
It created an orderly plain to settle a new area of the u.s, the territory grew in population and got rights for self government as well.
Japan entered the war on the side of the Allies on 23 August 1914, seizing the opportunity of Imperial Germany's distraction with the European War to expand its sphere of influence in China and the Pacific. ... The Japan already had a military alliJapan's aggressive actions against China and quick economic expansion during World War I—while the great powers of Europe were occupied elsewhere—would have far-reaching effects over the course of the 20th century with Britain, but that did not obligate it to enter the war.
Is this multiple choice? If not, i'd say that it is important for a historian to be sure of the authenticity of a primary source because a primary source needs to be proven to be accurate. It is important to study and make sure the source is authentic because the accuracy must be proven