Argentina
Brazil borders ten other countries. It borders every other country in South America except Ecuador and Chile.
Guatemala borders 4 countries, 3 of which are Central American. From north to south, here are the Central American countries that border Guatemala; Belize, Honduras, and El Salvador.
Guatemala is the only Central American country that borders four other countries. (Mexico, Belize, El Salvador, and Honduras) See related links below
Bolivia
Mexico
Colombia.
Columbia, Ecuador, Peru and Chile are South American countries that border the Pacific, with Chile having the longest Pacific coastline.
Zimbabwe is an African country that borders Botswana and South Africa. It is located in the southern part of the continent.
Namibia and Zimbabwe
Panama.
Nicaragua is located north of Costa Rica. The country of Panama also borders Costa Rica to the south. All three countries is located in South America.