White people are characterized by race also. The definition of Race from The Racial Justice Audit of Episcopal Leadership reads “Race is a made-up social construct, and not an actual biological fact. Race designations have changed over time. Some groups that are considered “white” in the United States today were considered “non-white” in previous eras, in U.S. Census data and in mass media and popular culture… The way in which racial categorizations are enforced (the shape of racism) has also changed over time. For example, the racial designation of Asian American and Pacific Islander changed four times in the 19th century. That is, they were defined at times as white and at other times as not white.”
See the research from Pew Research Center on the “changing categories the US has used to measure race” here.
What historical fact do you know about why there was the need to determine who was “white?” Answer here.