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Answer:


Explanation:
Given
Complementary Angles: AOC & BOC

Required
Determine AOC and BOC
---- Complementary Angles
Substitute BOC + 30 for AOC

Collect Like Terms


Divide through by 2

Recall that 


Answer: the North had more factories and railroads, while the South had more farms.
Explanation:Strengths and Weaknesses of North and South The Civil War was the bloodiest war in American history. America was split into two sides that had strengths and weaknesses against each other. It seemed they were the complete opposite.