Nullification is where a state has a right to disagree with a federal law they think is unconstitutional and not correct, and no longer abide by it. Nullification would have weakened the Union because states would no longer have to agree or act on certain laws, causing obvious conflict within the state and conflict between Congress and the state. The state would no longer be unified and a quarrel between people in the state, the states, and between the state and the Congress would deepen and would most likely lead to war and weaken the Union.
The dhow was used for heavy items that were not as fit for land-based trade. ... The dhow and lateen sail did for maritime trade what the saddle and stirrup did for land trade: they helped people widen networks of trade and communication thus accelerating the diffusion of goods, ideas, and culture.
Concurrent powers are powers that are shared by both the State and the federal government. These concurrent powers include regulating elections, taxing, borrowing money and establishing courts.
Feudalism started about A.D 700
