When will this pain end?

In behavioral sciences, the use of metatools plays a crucial role.

He is writing a thesis on dialectical materialism.

Japan's exclusive economic zone plays a crucial role in the management and utilization of marine resources.

He believes that he has extrasensory perception.

He felt cognitive dissonance between his actions and beliefs.

The Czechoslovak Socialist Republic was once an existing country.

The People's Socialist Republic of Albania was once an existing country.

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

The Socialist Federal Republic of Yugoslavia was a country that once existed.