Depending on what you have been learning most recently, it could be any of the following
· The Treaty of Paris was signed (brought an end to the French and Indian War, giving Britain claim over all of the east of the Mississippi River)
· The Stamp Act was passed ( it required that all colonists purchase marked, taxed paper for use in newspapers and legal documents. This was done in order to stop the rebels from printing newspapers that encouraged rebellion)
· The Boston Massacre (In which Redcoat troops fired into a crowd of sailors, when one redcoat soldier was knocked over.... (some believe it was an accident others think it was on purpose; its debatable)
Hope its one of these!
Their mission was to explore the unknown territory, establish trade with the Natives and affirm the sovereignty of the United States in the region.
In the era after Wold War I and before the Great Depression, American towns grew rapidly mostly because of the Second Industrial Revolution, which gave way to a rise of factories both in and around major cities in the US.
The answer for this is "Compromise of 1850".
The Compromise of 1850 is a set of laws dealing with the issue of slavery. California was admitted as a free state, upsetting the groups in favor of slavery and satisfying those opposing it in the U.S senate. In Addition, California abolished the slave trade by entering the Union as a free (no slavery) state.
The organization was League of Nations