He set out on a journey in search of the New World.

He set out on a journey in search of a new world.

His grandfather fought in the Second World War.

Esperanto is one of the most famous international auxiliary languages.

He is interested in the history of the Old World.

We all wish for world peace.

He always likes to be pedantic, explaining things down to the smallest detail.

He is a renowned economist who has written many important papers.

He is world-famous as an entomologist.

He is a renowned anthropologist, traveling around the world to study human cultures.