African Americans [ ... ] are a racially mixed or mulatto people—deeply and overwhelmingly so" (see genetics). After the Emancipation Proclamation, Chinese American men married African-American women in high proportions to their total marriage numbers due to few Chinese American women being in the United States. African slaves and their descendants have also had a history of cultural exchange and intermarriage with Native Americans, although they did not necessarily retain social, cultural or linguistic ties to Native peoples. There are also increasing intermarriages and offspring between non-Hispanic blacks and Hispanics of any race, especially between Puerto Ricans and African Americans (American-born blacks).
Chinese Americans and financial incentives for innovation. Ethnic Chinese have been successful in starting new firms in technology centers across the United States, including California's Silicon Valley. Chinese Americans have been disproportionately successful in high technology sectors, as evidenced by the Goldsea 100 Compilation of America's Most Successful Asian Entrepreneurs. Chinese Americans accounted for 4% of people listed in the 1998 Forbes Hi Tech 100 List. Annalee Saxenian, a UC Berkeley professor, whose research interests include the contribution of Chinese immigrants on America's technology concludes that in Silicon Valley, carried out a study that showed that since 1998, one out of five