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 Guatemala5 Belize6 El Salvador7 Nicaragua8 Honduras9 Costa Rica10 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