How did the Seminole resist removal from their land?
They fought a series of wars against the U.S. army.
They filed a lawsuit against the U.S. government.
They attacked white settlers who moved onto their land.
They protested the election of Andrew Jackson as president
Generally speaking, "They fought a series of wars against the U.S. army" would be the best option, although it should be noted that they also fought individual settlers.