The technology, logistics, and communication of the north that allowed them to defeat the south is because of their skill of having to manufacture supplies and weapons that they need for the war. They were able to create more weapons and be able to hire more soldiers.
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D.W Griffith first job in cinema was given by Edwin S. Potter! Hope this helps!
The principal reason for calling the constitutional convention was to strengthen the central government.
One of the most significant changes that Gorbachev made to the Soviet economy was that he was the first leader to really try to ease the planned economy and let some market forces in.