The Arauca River is a South America river in Colombia and Venezuela. The Atabapo River forms the international boundary between Venezuela and Colombia. The Amacuro River forms part of international boundary between Venezuela and Guyana.
the country that forms the northern boundary of the United States is Canada :)
This is the boundary with Ukraine: mountains and the river Tisa.
The 42nd parallel forms the southern boundary of Idaho. It marks the border between Idaho and Nevada as well as a portion of the border between Idaho and Oregon.
The Mississippi river forms the boundary between Missouri and Illinois!
The sea that forms the northern boundary of Africa is the Mediterranean Sea. The countries of Morocco, Algeria, Tunisia, Libya and Egypt border it.
red river
The Arctic Ocean
The sea that forms the northern boundary of Africa is the Mediterranean Sea. The countries of Morocco, Algeria, Tunisia, Libya and Egypt border it.
The river Danube and the South Dobrogea.
soviet union
Mediterranean Sea