I conducted a research project as a summer vacation homework.

He received a custodial sentence and was sentenced to five years in prison.

He acts like a free person.

He always proactively suggests new ideas.

The Democratic People's Republic of Korea is a country located in East Asia.

The Democratic Socialist Republic of Sri Lanka is located in South Asia.

China adopts the principle of people's democratic dictatorship.

He deeply believes in the principles of socialism.

He is a perfectionist, and his approach to work is very strict.

Capitalism is a form of economy characterized by private property and the pursuit of corporate profits.