panama
The source is Will Narr in North West England and ends where it joins the River Douglas.
It straddles the River Thames between north and south London.
where does pearl river end
North River Railway ended in 1881.
North River Railroad ended in 1881.
There is no 'river UK' !
The start of a river is its headwaters and, just in case you were wondering, the end is its mouth.
North Sea
North American Company ended in 1946.
Mongolia
It is the amazon