All people really need is food and some basic shelter. The way economics began is the farmers create the food, and non-agricultural workers trade non-essential

All people really need is food and some basic shelter. The way economics began is the farmers create the food, and non-agricultural workers trade non-essential goods and services with the farmers. Over time, the percentage of people working in agriculture declined. In less developed places like India, 50% of workers are still in agriculture.