There are at least four continents: Afro-Eurasia, America, Antarctica and Oceania. Everything beyond that is mostly culture and politics. You seem to be correc

There are at least four continents: Afro-Eurasia, America, Antarctica and Oceania. Everything beyond that is mostly culture and politics. You seem to be correct about Central being part of the northern continent though: the dividing line seems to be the Panama Canal, placing all of Central America in North America. The real question seems to be why Panama isn't then considered to be on both continents, considering the Canal would put a good chunk of it in South America. The answer as far as I can tell is just as I thought: politics. EDIT: Also the Caribbeans are apparently considered part of North America although Grenada is closer to Trinidad than anything beyond Puerto Rico is to the North American mainland. Fun. EDIT2: Okay, I give up. Can't we all just agree that the concept of a "continent" doesn't make sense? What continent do the Diomede islands belong to? What about Savoonga? What if Savoonga was Russian rather than part of Alaska?