How many countries are situated in north america? what are they?

There are 23 countries in North America: 
1 Canada
2 the United States
3 Mexico 
4 Guatemala
5 Belize
6 El Salvador
7 Nicaragua
8 Honduras
9 Costa Rica
10 Panama
(islands)
11 Antigua and Barbuda
12 Bahamas
13 Barbados
14 Cuba
15 Dominica
16 Dominican Republic
17 Grenada
18 Haiti
19 Jamaica
20 Saint Kitts and Nevis
21 Saint Lucia
22 Saint Vincent and the Grenadines
23 Trinidad and Tobago