<span>Al─Khwarizmi wrote an algebra textbook that was the standard for centuries during the golden age of islam :)</span>
This is a bit subjective, but many historians would agree that Hammurabi's most important contribution to history in general was that "<span>D. He was responsible for the first codification of laws"</span>
Answer:by allowing unconstitutional laws to be challenged and overturned
Explanation:
As described in NewsRepulic, During the Guided age, as defined by author Mark Twain, during the 1870's in big cities, like Boston, Chicago, New York, Cleveland, corruption was prevalent. The new immigrants, who were mainly looked upon as the least employable, the bottom of the social status, and of little value. They were someone who is new to the country, lacking in language skills, and someone who has come here to take your job. So, for them to assimilate, to survive, many immigrants were forced to join together to provide support the local political bosses. In exchange for their loyalty and votes, the new immigrants were provided, a chance for jobs, housing, help in naturalization, business licenses, assistance in the courts and a voice in the community.
Racial inequality being aversive to American principles was the point of Paul Robeson when he attested before the HUAC.
The HUAC or House Un-American Activities Committee investigates disruptive acts and alleged infidelity by public employees, private citizens, and organizations which were suspected to have Communist ties.