What military advantage did the Union have over the Confederacy in the West?
It held control of key river forts.
It had a fleet of armored gunboats.
It had African American troops.
It had European troops.

Key river forts

Explanation:

Answer 2 does not matter since in the west there was no need for a navy since it was deep inland.

Answer 3 does not apply since most of the African Americans were fighting the battles in the east side of the US and African Americans mostly lived in the east coast anyway, meaning they would most likely fight in the east.

Answer 4 is just plain incorrect since we had 0 military aid from other countries.

had a fleet of armored gunboats

Explanation:

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people can eat food during that time