Final answer:
The Communist government restricted foreign travel and its citizens from traveling to maintain control.
Step-by-step explanation:
The Communist government kept foreign travelers out and discouraged its own citizens from traveling in order to maintain control of the country. China's Communist government under the Chinese Communist Party in the past was known for such restrictions, exemplified by the term 'Bamboo Curtain' to describe the barriers to travel and communication with the outside world. These policies were aimed at controlling the flow of information and maintaining the government's authority. Authoritarian governments, in general, may restrict freedoms in this way to retain their grip on power.