The union started to control the mississippi river when troops captured vicksburg chancellorsville georgia gettysburg

Vicksburg is your answer

The city of Vicksburg was the last and key point in controlling the Mississippi river, and in effect, complete the Anaconda Plan, which split the Southern states into two portions to make them easier to be defeated.

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b, public works good luck

president thomas jefferson hoped that the embargo act of 1807 would the united states by demonstrating to britain and france their dependence on american goods, convincing them to respect american neutrality and stop impressing american seamen. instead, the act had a devastating effect on american trade.