Answer:
First thing, farming technology is less or even not available in context of nepal compare to other country.So they have to use traditional method which is time consuming and more effort and labour work
Another is farmer have to sale there crops in less price to seller because farmer don't have any facility (mostly farmer are uneducated so they don't know about marketting) that is why there gain is less then there efforts
<span>Surplus food contributed to rise of society because the crops made farmers heve more energy and do Job specialization(building cities, etc)</span>
Punxsutawney in western Pennsylvania.