Answer:
They were outraged that former Confederates were able to join Congress.
Explanation:
The congressional elections of 1866 brought about the northern voters rejecting President Johnson's view of Reconstruction. They were outraged that former Confederates were able to join Congress and handed a major victory to the Radical Republicans. This act made the Radical Republicans to be in control of Reconstruction although they were opposed by some people.
People got down in trenches and shot at people in other trenches. They would sometimes have to stay for days at a time. The conditions were rough and dirty.
-Quiet
<span>-Shy </span>
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Hope that helps :) </span>