I believe the answer is: positive externality
Positive externality refers to The benefit that enjoyed by a third party when the first and second party are conducting a transaction.
When you receive a vaccines, you prevent yourself from becoming a host that could contaminate other people from getting the virus. In the example above, you and your children are the first and second party. And other children are the third party.
Explanation:
can u explain i don't understand
Totalitarianism is a form of government where the government has complete control over private and political lives of its citizens. Stalin monitored telephone lines, read mail and had spies everywhere. Those that opposed him were killed and his secret police patrolled Russia. All newspapers, magazines, etc had to be approved by the Soviet Union. Propaganda was also in every corner of Russia. By using propaganda, he could instill fear.
Hope this helps!