What are the four nonviolent principles described in his "letters from a birmingham jail"

What caused the united states to side with britain during world war i?

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

Plz which of the following statements about the fugitive slave act of 1850 is not accurate? a. marshals you refuse to arrest a suspected fugitive could be find $1000. b. slave owners had to present evidence an african-american in the north was a fugitive slave. c. any person who provided food or shelter to a fugitive slave could be find $1000 and placed in jail for six months. d. it required of federal marshals to arrest any african-american suspected of being a runaway slave.