Why did it take so long to desegrate schools after brown v. board of education decisions

Because of the clause "all deliberate speed"

Explanation:

In Brown II, the Supreme Court ruled that the ruling needed to be implemented with "all deliberate speed" which means everything and nothing.

So, racists used that language to delay the implementation of desegregation

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.

your answer is

to dominate europe

and i know for a fact it can't be the others