Spain extends both farther north and farther south than Portugal does. So i'ts Spain.
Spain extends both farther north and farther south than Portugal does.
Florida is farther south
Spain
spain
Florida is farthest south
Parts of Portugal are farther south than most of Spain, but parts of Spain are farther south than all of Portugal. That statement is also true if you change the word 'south' to 'north' wherever it appears.
Spain
Florida.
Because if you look at a map it is farther south.
"farther south ... California" ... Florida
Did you check the map? They are right next to each other!