Final answer:
The common practice of marrying individuals of the same race or ethnicity in the United States and many other areas of the world is influenced by cultural norms, social attitudes, and historical factors. However, societal attitudes towards interracial marriage have evolved over time.
Step-by-step explanation:
In the United States and many other areas of the world, the common practice is for individuals to marry someone of the same race or ethnicity. This practice is influenced by cultural norms, social attitudes, and historical factors. However, it is important to note that societal attitudes towards interracial marriage have evolved over time, and there is increasing acceptance and celebration of diverse ethnic identities.