Feudalism characterized the social system of medieval Europe.

Changes in the social system inevitably occur with time.

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

You can solve the problem by using this method.

This company strictly adheres to the principle of fair trade.

He saved money using the 'hou' (alternative spelling of 'fran') to go to France.

No problem, I will do that job.

That proposal is completely unthinkable.

As a practical question, how are we going to fund this project?

This exam is a matter of life or death for me.