The Hatian revolution was in response to being held as slaves, and they have had enough.
The Sepoy revolution was in response to several factors. The Sepoy's were using pig fat for their bullets. The Sepoy's were not getting paid as soldiers. The Sepoy's were treated as inferior to English.
The Arno River (C) is an important river located in the Tuscan Region of Italy and was an important geographic feature which helped Florence to become a trade center.