Question 2. Arrange the following in chronological order: (a) Soviet invasion of Afghanistan (b) Fall of the Berlin Wall (c) Disintegration of the Soviet Union (d) Russian Revolution.
Correct option is C) Iron Age - began in Southwest Asia around 1000 BC Stone Age - evolved in Sub-Saharan Africa around 2,500,000 BC. Copper Age - began in Serbia around 5000 BC
