The National Guard was sent to New Orleans to maintain peace after Hurricane Katrina. (Two possible answers...list both!)
A
To form a more perfect union
B
Establish Justice (investigations, trials)
C
Insure domestic tranquility
D
Provide for the common defense
E
Promote the general welfare
F
Secure the blessings of liberty

d e

Explanation:

Within 96 hours of the Katrina's destruction, an additional 30,000 troops were sent to New Orleans. They assisted in search and rescue, medical treatment, evacuation and security.

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)