In this company, he is in the lowest of the low positions.

Feudalism characterized the social system of medieval Europe.

It is generally believed that the life of the middle class is stable.

He emphasized the importance of class struggle.

Changes in the social system inevitably occur with time.

In Marxism, it is said that the proletariat brings about social change.

Slavery is something that robs human dignity and is absolutely unacceptable.

His house is at the bottom of the mountain.

He put the book on the lower shelf.

He went down the stairs.