If you count Iceland as a part of Europe, it is furthest west. Otherwise, the furthest west European country is Ireland. The furthest west country in mainland Europe is Portugal.
french territory
Plymouth Argyle's Home Park is the furthest west in the football league. It is also the furthest south.
West Berlin was an outpost of Western European and American influence deep in Soviet-controlled territory.
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.
The western and northern boundary of Pennsylvania extends the furthest west.
The county furthest to the west of the UK mainland is Cornwall, provided the Scilly Islands is not included.
belfast
California is further west.
The Spanish and the French were negotiating the ownership of the Louisiana territory.
It's the furthest point west.
Nevada is further west.