The trail of tears was caused because the American settlers had been pressuring the federal government to remove Indians, mostly Cherokee and Chickasaw tribes, from the Southeast. Many settlers were settling on or around Indian lands, while others wanted more land to be available to European settlers. So, the correct answer would be A.
Generally speaking, from the 1830s on, people hoping to settle in the Northwest "B-traveled along the Oregon Trail," since this had become a well-established route.
The Aryans had brought the language of <span>Sanskrit to India.</span>
Many terrorist organizations are nationalists by another name.
Nationalist groups want freedom or independence from what they perceive as a outside power or force. Many terrorist organizations are formed to overthrow a government or gain access to nationalist state. ISIS for example wants an independent Islamic State which is free of Western influence. The Ku Klux Klan is a white nationalist group and also a domestic terrorist organization. Much of the terminology is perspective.