Columbus and the "Enterprise of the Indies"
Columbus' plan to get rich and famous by establishing a trade route to Asia
Used the teaching of Ptolemy:
Greek geographer (AD 90-168)
He wrote that each degree of earth was 50 miles (actually it is almost 70)
Claimed earth was 18,000 miles round around (actually 24, 859)
He said Asia was 50 degrees wider tha it is
Columbus and his brother attempted to sell his idea to various European countries, Spain decided to finance the trip