The west side.
The Mississippi River forms the Western border of the States of Illinois, Tennessee, and Mississippi. The Mississippi River forms the Eastern border of the States of Iowa, Missouri, Arkansas, and Louisiana.
Ohio River
The Mississippi
Missouri, Kentucky, Iowa, Indiana, Wisconsin
The Jordan River.
along georgias border
the Columbia river is located south of Washington, acting as a border between Washington and Oregon.
Victoria Falls is in Africa on the Zambezi River which forms the border between Zimbabwe and Zambia.
Oji River
The Mississippi River forms Arkansas's eastern border. Tennessee and Mississippi border Arkansas on the east. Lake Chicot is located in Arkansas near the Arkansas-Mississippi border.
Yes its eastern border is the Mississippi River.
The Iron Gate is a gorge on the Danube river. It is located on the border between Serbia and Romania.