The territory in Canada that is farthest west is Yukon. It is located in the northwest corner of the country, bordering Alaska to the west and British Columbia to the south. Yukon is known for its stunning natural landscapes, including mountains, forests, and rivers.
The USA contains Alaska which is located west of Canada.
Guatemala is the Central American country farthest to the west.
Puerto Rico is the farthest east of all the West Indies countries
The island is Puerto Rico.
Iceland is the farthest west of European nations.
Iceland
The nation that is furthest west on the continent of Europe is Portugal. However, Iceland is further west but is an island. It has been traditionally part of Europe.
If by "left-most" you mean looking down at a map, the farthest WEST is Iceland by technicality, although it is not a member of the EU, it is on the European continental shelf, the farthest West in countries which touch is Portugal, and the farthest West in the generally accepted European cluster is Ireland.
spain
It is the farthest west in continental U.S.A.
ICELAND
The Kingdom of Morocco is located at the western end of North Africa. Known to the Arabs as al-Maghreb al-Aqsa, or “the farthest west,” it was the center of Berber Islamic.
What is now Senegal.
The territory in Canada that is farthest west is Yukon. It is located in the northwest corner of the country, bordering Alaska to the west and British Columbia to the south. Yukon is known for its stunning natural landscapes, including mountains, forests, and rivers.
The county that is farthest west in Florida is Escambia County. It is located in the Florida Panhandle and includes the city of Pensacola. This county borders the state of Alabama to the west and the Gulf of Mexico to the south.
Those coordinates are in the Atlantic Ocean. The nearest country to them would be Iceland.