Plz

this city was key in arabian trade routes and was where muhammed centered the islamic faith.

The idea of a progressive income tax, which is still a standard taxing policy in the u.s. today, was aggressively sought by the populist party. select the best answer from the choices provided true or false

What are the most populous and least populous areas of russia? and why are some areas more heavily populated than others?

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true.b) some other scientific experts read the papers and provide quality control by eliminating many mistakes.c) an editor reads the papers, to make sure that all the semicolons are in the correct places.d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog.e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.