From the mid 19th to 20th centuries, many black people and ethnic Mexicans intermarried with each other in the Lower Rio Grande Valley in South Texas (mostly in Cameron County and Hidalga County).
In Cameron County, 38% of black people were interracially married (7/18 families) while in Hidalgo County the number was 72% (18/25 families).
The United States has many ethnic and racial groups, and interracial marriage is fairly common among most of them.
Interracial marriages increased from 2% of married couples in 1970 to 7% in 2005 According to a Pew Research Center analysis of census data conducted in 2013, 12% of newlyweds married someone of a different race.
Women are slightly more likely to “marry out” than men in this group: 61% of Native American female newlyweds married outside their race, compared with 54% of Native American male newlyweds.Case in point, the emergence of large populations of Afro-Arabs in the Arab World and mulattoes in the New World historically came about in the context of the Arab and Transatlantic slave trades, respectively, which resulted in impregnation of black women.