backwater (backwaters plural )
1 n-count A backwater is a place that is isolated.
usu with supp
...a quiet rural backwater.
2 n-count If you refer to a place or institution as a backwater, you think it is not developing properly because it is isolated from ideas and events in other places and institutions.
usu with supp (disapproval)
Britain could become a political backwater with no serious influence in the world...