The correct answer is D) the fact that the British ceded territories to the US without Native American consent.
The factor that contributed to warfare between the colonists and the Native Americans was the fact that the British ceded territories to the US without Native American consent.
Armed confrontations between Native American Indians and American colonists started since the very beginning of the arrival of the first Europeans to the Americas. The reasons were many and often. Basically, disputes of land. Native American Indians tried to defend their lands arguing that it belonged to them inherited by their ancestors. White Europeans colonists wanted the land to settled in and start a new life with new property and generate an income.
The major cause of shifts in political allegiance during this time came from the Great Depression, which required strong government intervention to correct the issue. These interventions became commonly ascociated with the Democratic Party, thanks to FDR.
