Why every world map is wrong?

Every year world cancer day is observed on which date ?

Identify the areas on the political map of the world where nomadic herding are practised.

Identify the areas on the political map of the world where mixed farming are practiced.

The walls of the classroom are decorated with the pictures of 'Shakespeare', 'buildings with domes', 'world maps' and beautiful valleys. How do these contrast with the world of these children?