Answer:
Before this event, the United States had not declared war.
Explanation:
The event that set off World War I was the assassination of Archduke Franz Ferdinand of the Austro-Hungarian Empire and his wife Sophie by Gavrilo Princip, a Serbian nationalist, on June 28, 1914 in Sarajevo.
The major social sciences are Anthropology, Archaeology, Economics, Geography, History, Law, Linguistics, Politics, Psychology and Sociology.
Both has their pros and cons. Someone might lean to the right because they are religious. It seems that most Christians are conservative. Yes, some Christians are democrats. Some democrats don't accept everything the left have to offer and same with the conservatives.
