What issues caused rivalries among American Indian groups before the Europeans arrived?

The rivalry between the French, Dutch, and the English for control of the fur trade in North America encouraged intertribal warfare among the Indians. The introduction of firearms proved detrimental to both Europeans as well as the Iroquois.

Explanation:

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the answer is: c. c.it limited the president’s power to start wars.

the war powers resolution of 1973 requires the president to notify the congress whenever the president wanted to order a military operation to other countries within 48 hours. if after being reviewed the congress disagree with the proposal, that the president will be banned from ordering the operation.

answer; environmental science;