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I need some help on these questions for APUSH (Period 1).

1. Why does this time Period go from 1491-1607?

2. Difference between the Spanish, Dutch, French and English Colonization prior to 1700 in the Americas

-What were their goals (wealth, religion, etc)

-How did these goals lead to different ways in which their societies in the New World developed

-What was happening prior to or in their country at the time to them coming to the New World

3. Impact of Europeans on Native Americans (1492 to 1700)

-How did things change (Positive and negative)

-List/Describe examples of how Native American resisted Change to Europeans

4. What was the Encomienda System and what were the debates surrounding it, and why did it eventually decline

5. How did the Columbian Exchange—the mutual transfer of material goods, commodities, animals, and diseases—affect interaction between Europeans and natives and among indigenous peoples in North America? (Think about how this could be presented in a prompt or a historical writers view point you have to describe/and or argue against)