Many African Americans were given jobs during the war so when the returning soldiers came home at the end of the war only to find that African Americans had taken over their jobs, it created racial tensions between them.
They became the founders of woman suffrage
That i don't know i guess they get more rights
It was important because it supported the Hanseatic trade route in the Baltik and the canal needed to be built between major trading cities. This was one of the great examples of co operation across borders in the North Europe in the area of free trade.