Rio grande....If you dont trust this jush go to this site and look your self http://en.wikipedia.org/wiki/List_of_the_ten_longest_Texas_rivers Enjoy :]
dfff
amazon river
Texas is separated from Oklahoma by the Red River, a major river that flows eastward along the border. Texas is separated from Louisiana by the Sabine River, which forms the eastern border of Texas. Both rivers serve as natural boundaries between the states.
Mississippi river is the longest river in the USA
the amazon river is the longest river in south America
The longest river is the Borsch River.
The spelling of America's longest river is America's longest river.
No it isn't the River Nile is the longest river!
the river amazon is the worlds longest river
Oklahoma does share the longest state line with Texas. The length of this line is around 540 miles long, following the path of the Red River.
The longest River in Africa is the River Nile. It is approximately 4160 miles, which is 6695 Km. The second longest River is the Congo River. The third longest River is the River Niger. The fourth longest is the Zambezi River
The Darling River has the longest river catchment, as it is fed by numerous large rivers in its headwaters. However, it is not the longest river. The longest actual river is the Murray River.