Here is the correct matching of each description with the corresponding person or entity:
- discovered the New World - Columbus
- first rounded Africa's tip - Dias
- the emperor of China - Kublai Khan
- conquered Jerusalem and Constantinople - Turks
- country that financed Columbus - Spain
- wealthy city of Portugal - Lisbon
- searched for the Fountain of Youth - Ponce de Leon
- discovered the Mississippi River - De Soto
- lived in China for twenty years - Marco Polo
- started Portuguese sailing school - Prince Henry
So the correct pairings are:
1 - Columbus
2 - Dias
3 - Kublai Khan
4 - Turks
5 - Spain
6 - Lisbon
7 - Ponce de Leon
8 - De Soto
9 - Marco Polo
10 - Prince Henry