One of the Important reasons for the 1836 Specie Circular was the uncontrolled land speculation in the West. Real estate speculation was funded by increased availability of credit from the Second Bank of the United States and new, reckless frontier banks
The correct option will be the last one: The Indians crossed artificial boundaries setting the stage for conflict. We know this because even though The US agreed to pay the various nations a cash payment every year as restitution for damage caused by white settlers' wagon trainsand the Native Americans agreed to limit themselves to a certain geographical area, to stop harassing white settlers, some people like the <span>Lakota Sioux refused to abide by it.</span>
The herero and Namqaqua genocide i hope this helps
Over time, the composition and the geographic distribution I was a foreign born population in the United States has changed considerably