Which of the following is the main reason for the failure of Burnside's plan?

Explanation:

In November 1862 Burnside was ordered to take charge of the Army of the Potomac after McClellan was relieved from duty. Burnside attempted to rally his demoralized army for a second offensive, but the plan—later known as the Mud March—was thwarted by heavy rains and failed to materialize.

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it proved indian land claims were unjustified.

i think it’s a i hope that right : )