Gun powder was used for military purposes in the 919 A.D. It killed many people in China. It was explosive.
Pickles, bacon, Doritos, ham (just trust me one this one)
Gender, religious background, race
Male, Christian, White
Name is William
Female, Christian, White
Name is Michelle
Male, Hindu, Brown
Name is Raj
Female, Hindu, Brown
Name is Karnika
Etc....
There is a gender pay gap in the US in that men typically earn more than women, and this includes for the same jobs and in the same position.
There is also a skin-colour discrimination in that people of color typically earn less than white people. So the people with the biggest income would most typically be white men!