Someone please help me

He is using logic to show that America failed to keep her promise

It is effective because it clearly shows that the Constitution that was written for everybody was not duly followed.

Explanation:

Martin Luther King Jr made use of logos in his argument against the injustice and suppression faced by the blacks in America. He duly noted that the forefathers of America made a Constitution that all men had inalienable rights to life, property, liberty, etc but such was not extended to the black man.

nautre

nature is sure to be the best thing on earth

the sunshine and beauty is sure to be worth

this can't be sold

for any money or gold

because nature is strongly beautiful and is the best thing to happen on earth

the rigid outer part of the earth, consisting of the crust and upper mantle is the lithosphere.     answer   crust and outer part of the mantle.