What happened in the territory that Native Americans refused to sell?

Why did leaders such as siddhartha gautama abandon hinduism to createbuddhism around 500 bce:

What event ensured england safe passage to colonize north america? a) many englishmen desired more religious freedom than the king allowed.b) england's government decided to take advantage of america's wealth of resources.c) england's defeat of the spanish armada in 1588 opened up the seaways.d) cabot claimed the north atlantic coast for england in 1497.

Why are nation-states difficult to create?