What led the supreme court to rule that the bill of rights applied to the states?

Which statement below would be the strongest evidence for the historians view

All of the following changes typically happened in colonies as a result of imperialism, except: a. cultural practices were outlawed. b. they became more economically self-sufficient. c. european nations built modern infrastructure, including railways. d. the european language became the language of government and education.

Explain the importance of carnegie, morgan, and rockefeller on the american political scene of the early 1900's.