Nepal is an agricultural country. Majority of people depend on agriculture for a living therefore, it is safe to say the main occupation of people in Nepal is agriculture.
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The 3 differences and similarities between the old and new city-states were:
Difference 1. The Old City States were developed around a proto-socialist economy which was mostly controlled by the government.
The new city States were more developed around personal enterprise where independent people could earn money.
Difference 2: Old city States had a social structure that consisted of a 'Farmer' class which worked in the plantations. In the new city States, this work was conducted by poor people who could earn a living or get food return. The work was not dependent on a 'specific' class of people anymore.
Difference 3: In the Old City States, the status of governing officials was based on wealth and power. In the new City States, the Kings had succession plans and power was inherited from father to son.
Similarity 1: Both city States were far from democracies and power was concentrated in the hands of a very few people.
Similarity 2: Most of the work was done by people who were basically poor. Either as farmers, peasants or slaves.
Similarity 3: Both cities were vulnerable during times of floods, droughts and natural disasters. They were eventually overrun by powerful nomads.
