Answer:
Clearing the land to raise crops
Explanation:
During the process to clear the land, humans began to understand how to deal with plants, and which species are better adapted to that kind of land. Plus, while understanding how to plant and crops, humans also tried to create tools and techniques to obtain the better of the plantation. A good example is the use of canals to control the water and to use it in the plantation, but especially how to organize each part of the plantation.
There is a following question that is the state law going to prevail over federal law of if the person can get more out of the state law. The answer is no because when the state and federal laws disagree, a concept called <em>supremacy clause</em> comes to light. According to supremacy clause, federal governments is the winner in these conflicting situations. It shows that federal law prevails over the state law.