What is okonkwo’s primary motivation in achebe’s things fall apart?

What type of figurative language is used in this passage from "letter from birmingham jail"? just as the prophets of the eighth century b.c. left their villages and carried their "thus saith the lord" far beyond the boundaries of their hometowns, and just as the apostle paul left his village of tarsus and carried the gospel of jesus christ to the far corners of the greco roman world, so am i compelled to carry the gospel of freedom beyond my own hometown. allusion symbolism imagery metaphor

Which inequality is represented by this graph? f(0, 1)

How did the language of the gettysburg address differ from the language in the secondary source about this speech?