A single market is a customs union with common policies on product regulation, and freedom of movement of all the factors of production (goods, services, capital and labour).
... an average density of 546.4/km² (1,414.4/mi²). The racial makeup of the town is 93.53% White, 1.36% African American, 0.15% Native American, 2.41% Asian, 0.03% ...