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).
... size is 3.49.
In the village the population is spread out with 24.7% under the age of 18, 6.9% from 18 to 24, 36.3% from 25 to 44, 25.1% from 45 to 64, and 7.0% who are 65 ...