Answer:
I am not completely sure u would have to double check with someone else but I believe that the answer would be B (possibly c but I narrowed it down to those 2 the question was a bit confusing)
1863-General Lee lead the Confederate troops into Pennsylvania. He surprised the units in Gettysburg and the battle was the most crucial and bloodiest of the war. The victory at Gettysburg belonged to Lincoln and the Union. Turning point; last offensive attack of the South.
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Hungary initially opened its borders, allowing East Germans to head West.