<span>the Northeast i believe... (:</span>
Maybe because the Taino had no gold which made columbus furious, or it could be slavery.
The institutional slavery affected the three main groups of Southerners in the antebellum period/Civil War because the Southerners were mainly angry some were angry because they needed slavery in order for their business to keep on doing better.
One of the most important changes Charlemagne made was abandoning the gold standard and putting all of Europe on the same silver currency<span>. Trade became easier and the continent prospered, aided by laws that took some power away from the nobles and let the peasantry participate in commerce. </span>
I believe the world for lack of rainfall is a Drought