What were two geographic reasons why cities grew up on rivers

What would lead a historian to consider two events to have a relationship of correlation rather than causation

Nhis essay about the atomic bombing of japan during world war ii, a student has used statistics he found in an article in the online archives of the irish times. the article is from may 5, 1997, and is called “cancer finding in hiroshima.” there is no author given. how should the student cite this source using mla citation format?

Americans who supported manifest destiny believed that the united states should