Hello! The answer to your question would be as followed:
Hunter-gatherers
<u><em>b. moved constantly in search of food</em></u>
The ancient kingdom of Kalinga was located on the northeastern coast of India. It was begun by the Gangas dynasty in the 11th century. That dynasty built some famous temples such as the temple to the sun god at Konark. In 1324 the dynasty collapsed due to the incursion of the sultan of Delhi into their realm.
Answer:
The Industrial Revolution saw the rise of factories in need of workers. Children were ideal employees because they could be paid less, were often of smaller stature so could attend to more minute tasks and were less likely to organize and strike against their pitiable working conditions.