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The ancient Egyptians thought of Egypt as being divided into two types of land, the 'black land' and the 'red land'.
River NileThe 'black land' was the fertile land on the banks of the Nile. The ancient Egyptians used this land for growing their crops. This was the only land in ancient Egypt that could be farmed because a layer of rich, black silt was deposited there every year after the Nile flooded.
DesertThe 'red land' was the barren desert that protected Egypt on two sides. These deserts separated ancient Egypt from neighbouring countries and invading armies. They also provided the ancient Egyptians with a source for precious metals and semi-precious stones.
The Supremacy Clause is a clause within Article VI<span> of the U.S. Constitution which dictates that federal law is the "supreme law of the land". This means that judges in every state must follow the Constitution, laws, and treatises of the federal government in matters which are directly or indirectly within the government's control. Under the doctrine of preemption, which is based on the Supremacy Clause, federal law preempts state law, even when the laws conflict. Thus, a federal court may require a state to stop certain behavior it believes interferes with, or is in conflict with, federal law.</span>