She got married and took a new surname.

I maintain my health by doing aerobic exercises every day.

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.

He is acting based on humanitarianism.

He always has an optimistic way of thinking.

He always takes a pessimistic view.

He deeply believes in the principles of communism.

Democracy is a political system that runs the country according to the will of the people.