Yes it can!
Oligarchy means a small group of people in the country having the power. This does not exclude representative democracy: the Oligarchs can represent some people's interests but not the whole population. This is the case for example when not all people have the right to vote: Slaves, women, non-citizens, etc.
I believe your answer would be Hippocrates.
The answer is Explorers were able to use accurate maps to reach their destinations!
The Senate and the house of Representatives
On June 27, 1950, President Harry S. Truman announces that he is ordering U.S. air and naval forces to South Korea to aid the democratic nation in repulsing an invasion by communist North Korea. The United States was undertaking the major military operation, he explained, to enforce a United Nations resolution calling for an end to hostilities, and to stem the spread of communism in Asia. In addition to ordering U.S. forces to Korea, Truman also deployed the U.S. 7th Fleet to Formosa (Taiwan) to guard against invasion by communist China and ordered an acceleration of military aid to French forces fighting communist guerrillas in Vietnam.
