how was cattle ranching positively and negatively affected by the expansion of railroads and refrigeration​

Which type of constitutional power allows congress to regulate immigration and naturalization?

Me a slaveowner who worked a slave to death or be a slave to death, a. cannot be tried for murder in criminal court but could be sued for wrongful death in the civil court b. cannot be tried in court because there was no law against the mistreatment of slaves. c. could have his form or plantation confiscated by the state and sold to the highest bidder. d. could be tried for murder in most southern states.

Following world war 2, how did the world's leaders promote peace and reduce poverty?