Why was placer mining the most widely used method of mining for gold? placer mining gave miners the best chance of striking it rich. placer mining required cooperation between miners and traders. placer mining was affordable to a large number of prospectors. placer mining was practiced by both chinese and native american miners.

answer; /// i do believe that its napolean's conquest of spain;

not sure might be he acquired the entire oregon territory from great britain

no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.

on the morning of  july 21,  1861, general mcdowell ordered the  unionarmy to attack. it was on this hill that  confederate  colonel thomas jackson and his forces held back theunion  troops.