Malcolm X argues that they are not Americans because I'm guessing that...
1. African Americans were not treated like Americans (whites) on the basis of their skin color, so why call them Americans when they aren't treated like so?
2. African history doesn't just start at slavery. It began years before, therefore their roots are deeper than the country they were born in, it goes back to their ancestors in Africa and their culture derives from that, not the U.S culture.
3. The only factor that made the slaves American was due to slave trade; they were not born in the U.S, just brought there to help profit the whites' and produce mass amounts of cotton. But by the time he was born, most slaves had American-born children so I may have contradicted myself. I hope I helped.
The event led to a rapid population increase in California in the late 1840s is the discovery of Gold in California. Due to the discovery of Gold a lot of people like miners and traders settle in California and thus starting the Gold Rush in late 1840s. Also due to the Gold Rush in California a large number of foreigners and people around the globe flocked in California for gold.
They taxed traders coming and leaving Ghana, and they used their armies to protect trade routes.