A volcanic eruption or extreme flooding.
Six presidents survived their assassination attempts:
Andrew Jackson (1829-37), Theodore Roosevelt (1901-09), Franklin Roosevelt (1933-45), Harry Truman (1945-53), Gerald Ford (1974-77), and Ronald Reagan (1981-89).
<span>The correct answer is obtaining the compass from Asia. By the fifteenth century, the Arabs had significantly improved the compass, making it a much more valuable tool for navigation. In addition, many Europeans hoped that exploration would find new, undiscovered potential sources of wealth.</span>
Some people were against the purchase, they thought president jefferson overstepped his constitutional authority by buying it.
