Which organization created a rating system for hurricanes based on their intensity?

How should the student cite this source using mla citation format?

In their competition for power nations raced to

Alot of points! ! what was the greatest achievement of el libertador, simón bolívar? a. he became a military strongman in peru. b. he freed venezuelans from spanish rule. c. he bernardo o'higgins liberate chile. d. he united mexicans of all races against spain.