3. The rocky, hilly land of south Egypt caused , or steep rapids, to form.

Nile

Explanation:

A nile fits that description

after the roman empire fell, some of its cultural achievements lasted for some time and others were lost. lost achievements include architecture , coins, and literacy. however, several things remained, such as the language. people may not have spoken this language in every city, but it influenced the languages they did speak. they also created the julian , which was commonly used until the eighteenth century.