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.
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North America includes the United States and Canada and North America could be considered a Region
A mass extincrion. It wiped out 95% of marine life and 70% of land life.
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People may participate in politics in many ways. They can write their Representative or Senator, or work in for a candidate or political party. They can make presentations to their local school board or city council, or call the police to complain about the neighbor's dog. Partly because of our federalist system, people have many opportunities to participate in our democracy on federal, state, and local levels. Some forms of participation are more common than others and some citizens participate more than others, but almost everyone has a voice in government.
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