The Mid-Atlantic Ridge is a underwater mountain range that runs down the middle of the Atlantic Ocean. It's not a country, but it runs through many different countries' territorial waters.

Here are some examples:

* North America: The United States, Canada

* South America: Brazil, Argentina

* Europe: Iceland, Portugal, Spain, France, Ireland, United Kingdom

* Africa: Morocco, Western Sahara, Mauritania, Senegal, Gambia, Guinea-Bissau, Guinea, Sierra Leone, Liberia, Ivory Coast, Ghana, Togo, Benin, Nigeria, Cameroon, Gabon, Republic of Congo, Democratic Republic of Congo, Angola, Namibia, South Africa

Therefore, you can't say that one country lies on the Mid-Atlantic Ridge.