WORLD HISTORY

Detailed explanation-1: -Ans : The capital city of mahajanapadas was fortified with huge walls of wood, bricks or stones around them because people were afraid of attacks from other kings and needed protection.

Detailed explanation-2: -People stopped building them for a mix of reasons. They became less effective. Party because a properly equipped enemy could get through them but also because they didn’t do much to stop the enemy bombarding the city with artillery.

Detailed explanation-3: -For millennia, Chinese leaders instituted wall-building projects to protect the land from northern, nomadic invaders.

Detailed explanation-4: -The walls of Uruk were thought to have been built by the great king Gilgamesh upon which he inscribed his heroic deeds which formed the basis for the later epic he is most famous for. Walls began to rise around cities throughout Mesopotamia shortly after urbanization began in the region c. 4500 BCE.