Under article VI of the Constitution, the laws of Congress and all treaties are the law of the land.
This article creates all the laws within a country, which were made in accordance with the Supreme Court of the United States of America. Additionally, this article deals with forbidding a certain religion from preventing a candidate from holding his or her position.
When unions were first organized, union leaders were in competition with one another in order to get the most active labor members, but they soon realized that this was a failing tactic and often united into single groups.
Yes, in general it is true that an important characteristic of civilization is economic activity, since without economic activity it is impossible to trade and grow the economy to the extent that people can develop new skills and trades.