The answer is more complicated than a simple yes and no.
Explanation:
The United States has historically not been able to provide sovereignty to Native Americans over their own land due to the conflicting doctrine of a Westward expansion.
Many natives were initially killed or at best, forced out of their homes to move farther away from United States land. However, as expansion became inevitable, the US government was involved in massacres to remove natives and annex large parts of land.
Today, the United States government has tried to right the wrongs of the past by giving hundreds of 'Reserves' which are like countries within countries where Native American tribes have their own laws and way of lives.
The most important impact of the improvements in saddles in assisting the spread of Islam to Sub-Saharan africa is they they contributed the increase in Trans-Saharan Trade. They help to increase the trade in the region so that Its not hard to trade some of the product.
