D
Explanation:
During the wars most men had to leave for war and the women stayed home. Since women needed money and the jobs needed workers the women start working.
By changing the traditional Mongol strategies and war policies to help keep his followers close and create a powerful military. He also took resources from his defeated enemies to help support and grow his nation.
John Kay invented the flying shuttle.
They were promised quick change and food
Answer:
The development of urban centers, script on seals, advancement of technologies and urban sanitation systems.
Explanation:
The development of urban centers, script on seals, advancement of technologies and urban sanitation systems are the features of the Indus valley civilization which make it unique in the history. They developed urban centers where people comes from surrounding areas for trade. They also used advance technology of measuring length and mass. They also formed the world's first known urban sanitation systems.