How did christopher columbus start exploring?

How many people were under the rubble of the twin towers? What was one significant result of changes in manufacturing and transportation that took place in the first half lf the nineteeth century? What was the worlds first known story? Where does the surname Holdcroft come from? Who has managed more than one club to Premier League or Division 1 titles? Which king was the founder and the first ruler of the ancient Korean kingdom of Baekje? How many prisoners did Sgt.Alvin york capture? What role did F.W. DE klerk play in the end of apartheid? Which spiritual was considered one of the anthems of the civil rights movement? What ethnic groups live in italy? Which groups of people did not attend the Constitutional Convention? Why is the spring festival so important to the Chinese calendar? Were did Greeks live in Italy!? Why were Spanish officials worried about the US claiming territory? What were some technological advances of 1969? What did William the Conqueror look like? Which team was the overall number one seed in the 2010 NCAA tournament? How many years after the Boston massacre did the Boston Tea Party take place? How many people can live in a kwakiutl plank house? What are the political features of North Carolina?

How did christopher columbus start exploring?