When did the caste system evolve into a four tiered hierarchy?A.) when the Aryans ruled over the region - They arrived in 1500BC and developed the grouping of people based on their status and activities in life.
The original purpose of NAFTA is to encourage economic activity between North America's 3 major economic powers.
It was significant because he showed that it was possible for the government to put down violent resistance and that no people shall ignore the law. Of course, the tax was still difficult to collect, but the people at least knew that they couldn't just pick up arms and easily oppose what they wanted.