The allied nations at the beginning of wwi were a. france, russia, and the united states. b. great britain, france, and russia. c. germany, austria-hungary, and italy. d. russia, germany, and austria-hungary.

 B. Great Britain, France and Russia

Context/explanation:

The military plans laid before World War I presupposed a major war between countries, and the nations of Europe joined together in competing alliances.  The Triple Entente had Britain, France and Russia as allies -- and those nations became known as the Allies in the Great War (now known as World War I).  

Another alignment of nations, the Triple Alliance, consisted of Germany, Austria-Hungary, and Italy.  When the war broke out, Italy changed its allegiance and eventually became part of the Allies.  Germany and Austria-Hungary added Bulgaria and the Ottoman Empire to their side in the war, and were known as the Central Powers.

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.