2019-08-23

The government of the country is its control system.

Governments make laws and provide services to their citizens.

The land over which a government has control is its territory.

A country's territory（领土） has boundaries(边界线）, or borders（边界）.

When you leave or enter a country's territory, you usually need a passport.

A country's military provides defense for its territory and its citizens.

A military includes an army, an air force and a navy.

The main purpose of a military is to defend a country from attack.

A country's criminal justice system includes the police, courts and prisons.

Its purpose is to enforce the law and protect people from criminal activities.

A country's social services system provides support to people in need.

It provides basic health care services and helps poor people support their children.