How were journeys for explorers like Vasco de Gama and Christopher Columbus possible in the late 1400s? A. Support of the exploration by the English government
B. Trade connections made by the Sultan
C. Effects of the Atlantic slave trade
D. Development of new navigational technology

Thomas jefferson was important in the revolutionary era because a) he wrote much of the declaration of independence. b) he was elected the president of the continental congress. c) his philosophies were used in the influential pamphlet common sense. reactivate d) his leadership and moral stand lead to the colonies to fight for the abolition of slavery.