After a devastating earthquake hit haiti in 2010, the economic leaders of the free world forgave haiti's debt. will this action likely hurt or haiti's development?

It would definitely help Haiti's development. Economic debt forgiveness allows a developing nation to invest money in its people’s social welfare to improve areas such as healthcare and education rather than pay back loans that often were used corruptly by governments.

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain

"the attempts of the proletariat to rise above this abasement"