The X,Y,Z affair was an incident between French and American diplomats where they were trying to make a deal that would stop the French from seizing the America ships.
(that resulted in a war known as the Quasi-War.)
Americans were angered by this because the French agents wanted large amounts of money just to stop them from seizing their ships
the neolithic it developed about 12.000 ago about
The Indus river was a constant flow of natural resources. The river also made the soil very fertile and that meant good crops when planted in the right season, it also made it easy for trade boats to pass through.