they conducted thorough scientific experiments
At the time Jefferson was in limbo over whether or not the president had the power to buy land from foreign countries. However after the negotiations he saw that the amount of land proposed was well worth the possible overstepping of his role. He also in the beginning only wanted New Orleans however Napoleon offered to sell it all because he needed funding for his war with Europe.
The country Greece is a peninsula with many smaller islands.
Renaissance is a French word meaning “rebirth.” It refers to a period in European civilization that was marked by a revival of Classical learning and wisdom and this period was characterized by a rebirth of learning and an appreciate for ancient Greek and Roman knowledge, art, and architecture. This is an appropriate term for the period.