Two ways the posters encouraged American workers to work harder and increase production.

It help people gained some enthusiasm and to get work done to stop something that they didn't want to happen again.

Explanation: "It could arouse frightened and worried feelings and national pride. ... Other family members or friends that had died in previous wars, and nobody wanted to face the tragedies again, so they would be convinced by the posters."

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)

brainliest means the answer that is best and you found it very

if you ask any question and 2 persons gave you answer for your question and the answer of one person you liked the most and found it most the we can mark it as brainliest . at the side of every person's answer an option of brainliet then we can appericiate the user by marking it as brainlist

if someone marks our answer as brainliest then we can get ranks also

done.