I'm guessing that the White Nile is called the big long river because it is the longest out of the other one, the Blue Nile. However, the Blue Nile provides roughly 2/3 of the Nile's water supply.
The Pioneer River is 1500 km long.
295 miles long
the river nile it is 6695 km long
Yes, the Big River in eastern Victoria Australia is approximately 32 miles (52 km) long.
River Nile
A tributary
The river Thames is 215 miles long.
It is 10,184 miles long.
About 4000 miles long.
The Missouri River is 2,341 miles long and is the longest tributary to the Mississippi River.
There is no river called Bulgaria here
Rio Grande