How can you tell that this speech is a primary source about roosevelt?

According to jean-jaquees rousseau, individuals participating in a social contact agree to be ruled by

Which of these statements describes a long-term impact of european imperialism in africa? a. african countries joined together to present a united front against imperialism. b. europeans paid african countries after colonizing them, offering these new countries a fresh start. c. european powers drew the current borders, splitting ethnic groups among modern countries. d. africans became more loyal to their countries than to their ethnic groups.

2. what was the dred scott decision about? what do we learn from this supreme court case?