What was noteworthy about the Siege of Port Hudson in 1863? It included African American troops who fought for the Union. It was the first battle in the fight to control the Mississippi River. It was the first major loss suffered by the Confederates in Louisiana. It was one of the shortest invasions in the war and lasted only a day.

By the end of the war nearly 200,000 blacks had served in the Union forces. A significant result of the siege was the blow it gave Banks's political ambitions. If Banks had overrun the position in May, he could then have taken command of Grant's siege of Vicksburg as the ranking officer and appeared a hero.

Explanation:

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the answer is a) to be able to obey them.