What was the significance of the Santa Fe Trail in westward expansion?

OA. It was the most important route for pioneers planning to settle in the Southwest.

OB. It was the main route for riders on the Pony Express.

OC. It was the most important route for prospectors seeking gold in California.

OD. It was the main route for Mormons heading to Utah.

Which statement best explains why a supreme court opinion is a seminal document? an opinion can become quite lengthy, which makes it a seminal document. supreme court documents are the only seminal documents in the united states. an opinion may create major changes in the laws or policies of the united states. generally speaking, a supreme court opinion reflects the feelings of all americans.