What made slums so difficult to live in?

Why was mao zedong’s communist china ready to use military tactics against the troops of us general douglas macarthur in korea? a. mao zedong had long planned to declare war against the united states. b. us troops kept marching farther into north korea, getting closer to the chinese border. c. us president harry truman threatened to use nuclear weapons against china. d. kim il sung had requested china’s to declare war against the united states.

The development of humans was directly dependent ondevelopment of a language. development of communication between people. e development of tools. litdevelopment of the wheel.

Brainliesttt !me : ) what was the result of indian independence?