People having too much so they don't buy any more<span />
Movies were often used as political propaganda. For example, during world war 2, movies shown were either about the war or were actual scenes from the war using footage by people on the war fronts. This was done to improve morale and inspire people to join the effort. The movies would be about monstrosities by the enemies and about war heroes of the allies and the people would join the fight and want to help.
In Tokyo, Commodore Matthew Calbraith Perry, representing the U.S. government, signs the Treaty of Kanagawa<span> with the </span>Japanese<span> government, opening the ports of Shimoda and Hakodate to American trade and permitting the establishment of a U.S. consulate in </span>Japan, maybe this is what your looking for ?
The root cause of the American Civil War is perhaps the most controversial topic in American history. Even before the war was over, scholars in the North and South began to analyze and interpret the reasons behind the bloodshed.
The scholars immediately disagreed over the causes of the war and disagreement persists today. Many maintain that the primary cause of the war was the Southern states’ desire to preserve the institution of slavery. Others minimize slavery and point to other factors, such as taxation or the principle of States' Rights.
In 2011, at the outset of the sesquicentennial, a Pew Research Center poll found that Americans were significantly divided on the issue, with 48% saying the war was "mainly about states' rights," 38% saying the war was "mainly about slavery," with the remainder answering "both equally" or "neither/don't know."
