Why were the native american tribes of north america better able to resist spanish encroachments?

The closer the genetic link between two individuals, the greater the correspondence

Can someone make a thesis statement out of this? some historians have called the civil war and reconstruction period a “second american revolution.”

Is made of materials that are poor conductors, such as glass, plastic, or rubber. they are used in an attempt to keep an electrical current within safe boundaries. for example, the plastic coating on an electrical wire is and is designed to keep the electricity in the wire