In poetry, a foot is a certain number of syllables forming part of a line of verse, measured for effect in English as long beats (accented) and short beats (unaccented).
In many other languages criteria such as duration of the syllable (long or short) is the effect measured.
... 48.41% African American, 0.30% Native American, 3.41% Asian, 0.00% Pacific Islander, 4.15% from other races, and 3.73% from two or more races. 11.67% of the population ...