Answer:
A . Spain
Explanation:
Columbus, an Italian sailor, had lobbied in different courts, but it found receptive ears only in Spain. The historical context helped him. After the union of the two most powerful kigdoms of the peninsula, Castilla and Aragón, their combined forces managed to expel the last Muslim ruler in the peninsula. They reunified Spain as a Christian kingdom in 1492. Columbus persuaded Queen Isabela de Castilla and king Fernando de Aragón to finance his first exploration in search for a route to Asia; they needed money and resources to recover from the war with the Moors and repay their debts.
