Answer:
Asia and Australia
Explanation:
The large landmasses on earth are divided as Continents. Out of all the continents that exist, the one with the most land is Asia. It has a landmass of roughly 17,139,445 square miles. This equates to roughly 29% of all the land on Earth. With Asia being the largest landmass, the one with the least amount of land is Australia which only spans 836,330 square miles which is roughly %1.45 of all the land on Earth.
In the United States, the only reason slavery was abolished was the Civil War, since up to this conflict the Southern states had refused to limit their ability to use slaves for labor. This led to a major division within society--since the almost the entirely of the population in the North was opposed to slavery.
Do you mean JFK? If so then he believed that science could evolve to the point that it can regrow limbs.