Natural
A strait, or straits, eg, the Straits of Gibraltar, the Bass Strait.
The strait separates northern Africa from the Rock of Gibraltar on the southernmost point of the Iberian Peninsula.
Usually in boats. A strait is a narrow water passage between two points of land, as in the Strait of Gibraltar at the entrance to the Mediterranean Sea.
The Rock of Gibraltar
The major land body just south of Spain is Africa. Specifically, the country of Morocco.
The Strait of Gibraltar is about 7-8 miles wide. However, Spain actually controls Ceuta, which is the African peninsula on the Strait of Gibraltar. So, Spain actually borders Morocco directly at the Strait of Gibraltar (although there is a no-man's land of roughly 100-200 feet that separates them).
Gibraltar has a land border with Spain.
Types of land base vary among different manmade and natural environments. As Indian reservations are scattered among different biomes, their land bases can be wildly different.
Yes, during the last Ice Age, there was a land bridge known as the Strait of Gibraltar that connected Spain and Africa. This land bridge emerged due to lower sea levels caused by the expansion of glaciers during the Ice Age.
6 km
a strait is water and an isthmus is land
A "strait" refers to a narrow strip of WATER & an "isthmus" refers to a narrow strip of LAND.