Which of the following describes a major difference between moderate and Radical Republicans following the end of the Civil War?

C. Radical Republicans were less willing to allow former  Confederates to participate in government.

Explanation:

Radical Republicans were so called because they advocated radical policies based on the socio-political landscape at the time in calling for an immediate, permanent and uncompensated end to slavery.

They were very opposed to former Confederates such as officers and politicians joining Congress or any other form of government so as not to give them the chance to implement confederate policies.

the answer here would be

on the morning of  july 21,  1861, general mcdowell ordered the  unionarmy to attack. it was on this hill that  confederate  colonel thomas jackson and his forces held back theunion  troops.