Was the atomic bomb necessary to end the war?

no

Explanation:

In the decades since World War II, historians have engaged in an often vitriolic debate over the decision to use the atomic bombs. "Traditionalists" have maintained that the bombs were necessary in order to save American lives and prevent an invasion that might have cost many more lives than the bombs took.

Explanation:

the completion of the erie canal spurred the first great westward movement of american settlers, gave access to the rich land and resources west of the appalachians and made new york the preeminent commercial city in the united states.

b. she founded a new dynasty that ruled egypt for generations.