the river Rhine
Rhine's length is 820 miles (1,320 kilometers).
It starts at the Alps and ends at the Adriatic Sea. Hope thats helpfull.
The Po River starts in the Alps, and ends in the Adriatic Sea.
The Nile River begins north of 45 north latitude in Africa and ends south of 30 north latitude where it empties into the Mediterranean Sea.
It starts at Switzerland and ends at The Netherlands.
The River Thames flows into the North Sea.
It ends at Ipswich when it joins the River Orwell, which flows into the North Sea.
Mississippi River. *Sorry if this is a late answer T-T.
thames
Ems
The source is Will Narr in North West England and ends where it joins the River Douglas.
The river that begins at 45 degrees north latitude and ends at 30 degrees north latitude is the Ohio River. It starts in the Allegheny Mountains of Pennsylvania, flowing southwest and eventually merging with the Mississippi River at Cairo, Illinois. The Ohio River is a significant tributary, playing a crucial role in the geography and economy of the central United States.