Russia, Canada and Mexico.
Actually, only Canada and Mexico share a land border with the United States.
If one includes nearby nations which border on territorial waters (12 miles from each country - in other words, no more than 25 miles or so apart over water), then Russia and The Bahamas should also be included.
If one also include the various territories and possessions of the United States, then the following countries also share a water boundary: British Virgin Islands, Dominican Republic, Western Samoa, the Turk and Caicos Islands, and the Northern Mariana Islands.
The 3 countries are Canada, Russia, The United States Of America
It is bordered by the United States, Guatemala and Belize.
There are only 3 countries in the world that border 3 oceans. Russia, Canada and USA. All of whom border the Pacific, Atlantic and Arctic Oceans.
Including territories, I believe only 2 countries border 4/5 oceans (the most), but I believe no country borders all 5 oceans. The two countries are the United Kingdom and France, who both border all oceans but the Arctic. But by integral parts alone, 3 countries border 3/5 oceans. They are Russia, Canada, and the United States. (who all border the Atlantic, Pacific, and Arctic Ocean)
Ireland, United Kingdom, and United States are some countries.
The United States of AmericaJapanSweden
if you mean the seas of 3 different oceans then only Canada russia France Britain & the united states but if you just mean 3 differently named seas then many more countries would qualify
Mexico, United States, and Canada
1Russia 2Canada 3 United States of America
The three most important countries are the United States, Canada and Britain.
Unfortanetly, there aren't 10 states that border The Pacific Ocean, but there are 3, including Washington, Oregon, and California.
Russia, Canada, United States.