What was the purpose of the i have a dream speech?

The 14th amendment overruled the supreme court case of dred scott vs. sandford. the landmark supreme court case determined which of the following points? a. slaves could not be citizens b. non-landowners could not be citizens c. blacks could not be citizens d. all persons born or naturalized in the united states vary differently in citizen status.

Who was saul? explain his relationship to david and the importance of david to both christians and jews.

What from the columbian exchange had perhaps the biggest impact on the world?