A. Polar regions. Explorers didn't start getting close to the ice caps until a decade or two before world war 2 started.
No "Americans" arrived in North America. However, in 10 A.D. Vikings explored the fringes of North America. Also, Native Americans crossed over from Siberia into Alaska over a land bridge about 12,000 years ago. In 1501, Amerigo Vespucci officially discovered America but thought it was Asia so he did not dock. Then in 1592, Christopher Columbus found and docked in the Caribbean and was the first man to land on America.
2. the relationship of Native Americans with most European groups at first were rather peaceful then turned sour over time especially with the British and least the French.
3. Indentured servant were people were immigrants receiving an american passport as pay. To work on their farm or bushiness for how many years they opted to, usually multiple years.
4. Slave trade started in the colonies for cheap work. As most employers couldn't afford to pay their workers.
5. The head right system was a legal land grant for people. Who would help populate the colonies.
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The Wilmot Proviso proposed an American law to ban slavery,
