The Louisiana Purchase was controversial because... . However, it was the foundation for the westward expansion of the United States. The purchase doubled the size of the country and ensured... . Drop box 1 possible answers: the land that the United States purchased was unfit for farming -- the US Constitution did not directly give the government the power to buy foreign territories -- it broke earlier agreements that the United States had made with the Native Americans

Drop box 2 possible answers: free access to the Mississippi River -- lasting peace between the United States and Great Britain -- that American Indians stayed away from the US settlements

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.

when studying cause and effect, historians usually group the causes into different categories. for example, cultural causes reflect how a society’s literature and art convey the way the society saw itself in relation to the rest of the world. another resource that historians use to understand society is pop culture, which tells them the trends and ideas that are preferred by the common people. when studying cause and effect, it’s important to remember multiple causation, or the idea that an effect could have several causes and vice versa.  

the correct option is “cultural causes” since art and literature are related to the culture of a place. culture is determined by literature, art, music.

the correct option is “pop culture” since it reflects the likes and ideas of common people whereas the rest of the options do not focus on common people.  

the correct option is “multiple causation” since it refers to the idea that events are caused by multiple reasons, not just a single one.  

answer: d. joseph james clark​

explanation:

in 1989, tiananmen square in beijing was the site of china’s main industries. china’s government headquarters. -pro-democracy demonstrations. (second choice)