What was the purpose of poll taxes, literacy tests, and grandfather clauses?

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.

The answer because i don’t know it someone

In what way did expansion and global trade during the 15th to 18th countries affect the economies of european countries