What were the different approaches to ending slavery?

 Insurrection or revolt - slave uprisings; often killing off the "masters" and fleeing.

Explanation:

Insurrection or revolt - slave uprisings; often killing off the "masters" and fleeing.

Explanation:

35 is your answer because i looked it up

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)