Central America is a long and narrow strip of land which is located between two bodies of water and which connects two pieces of land - we call such a formation an "isthmus" - this is the correct answer.
The Suez canal is also such an isthmus and so is Manila, the capital of the Philippines.
1: A
2:A
3:B
4:A
5:D
6:D
7:A
8:D
9:D
10:B
I believe some central Asians are mostly whites