Every individual had to be identified so that the state could control its population.

The other way to attack this problem would be to control the population somehow.

Various methods in the 20th century have been attempted to control the population.

Since 1979, Chinese couples have been limited to one child by law in order to control the country's population.

However, in the 1990s and 2000s with increased exploitation of the area's natural resources, efforts have been made to control the local population.

"There's got to be a better way of controlling the population."

African countries would be able to train more of these if they controlled their population.

Specialists have been split over how best to control population.

It's an attempt to control the population of the third world.

Also, the government wishes to control the population in close clusters.