Option: They wanted to seek silver and gold there.
Explanation:
Americans first travel across the Great Plains to get gold and silver in the 1800s. After the Civil War, a vast amount of people from the east began to move in the West in search of gold. The first wave of settlers to the West were miners. The great plains region consists of Texas, Colorado, Kansas, Nebraska, and Oklahoma.
It was to the "judicial branch" that the National Rifle Association submitted its brief in support of super PACs in Citizens United v. Federal <span>Election Commission, since it was under judicial review. </span>
