i don't know what "was" means but the Pecos river is a tributary to the Rio Grande
Rio Grande
amazon river
The Missouri River is actually a major tributary to the Mississippi River, so the question does not make sense
The Arkansas River is a major tributary of the Mississippi River in the USA.
The Snake River is a major tributary of the Columbia River in the U.S.
it is a major tributary of the Congo River in Central Africa
1. First of all, a tributary is a river that flows into a larger river. 2. A Missouri river a tributary. 3. THE major river of which the Missouri River is a tributary is the Mississippi River. The confluence of the Missouri River with the Mississippi River is at St. Charles, Missouri, located just north of St. Louis. 4.The Missouri River is the largest tributary of the Mississippi River, being not much smaller at point of confluence.
The Ohio river is a major tributary of the Mississippi.
The Rio Tambo is a tributary of the Amazon river, on the eastern slopes of the South American Andes. The major tributary of the Mississippi River is the Missouri, which is a major river in its own right. Tributary payments to the king were one facet of feudalism.
The Benue River is the major tributary of the Niger River and is approximately 1,400 km long.
The Benue River is the major tributary of the Niger River and is approximately 1,400 km long.
the river madiera is in south america and is a major tributary off of the Amazon river.
Yes, there is an Arkansas River... it is a major tributary to the Missisippi River