Columbus' two mistakes were that he believed the distance to asia was shorter than it really was, and he believed the land he discovered was near the continent of

#2 the answer is d

#3 the answer is a

#4 the answer is b

- "bill clinton ( the 42nd u.s. president, served in office from by low unemployment, declining crime rates and a budget surplus. during clinton's second term, the u.s. economy was healthy, unemployment was low and the nation experienced a major technology boom and the rise of the internet."