Explain why might a historian might not think that joseph f greens letter reflects the morale of the entire union army

Battle of Fredericksburg was devastating for the Union Army, so the letter may not be a proper representative.

Explanation:

The battle of Fredericksburg was a bad routing of the Union Army where heavy looses were incurred. The letter written by Joseph F. Green at the time was unusually optimistic.

One would believe that the greatest loss of Union Army during the Civil War would stir greater sadness in the solider.

So either he was isolated from the thick of action and did not realize that it was as bad as it actually was or that he had a vested interest in portraying the situation as better than it was.

alliances in ww1 were different from ww2 because the entente in ww1 made up of serbia,russia,france,britan,japan and italy later america  and all allied in a sort of balance of power and too keep germany,austria-hungary,and the ottomans down. russia allied the serbians in order to exert its influence in the balkans while france allied the russians because france was still in dismay and insulted after the defeat to the germans during the unification of germany and britian allied the belgians after the germans invasion of belgium.in ww2 the alliances were in a preemptive attempt to deter any further wars into happening while germany and italy allied since they were insulted and humiliated after the previous war while also sharing a similar ideology of facsim along with japan which all 3 had a want for world domination and agreed to assist one another in the endevours 

explanation: