The first farming settlements in China developed "along the rivers," since the rivers provided crucial irrigation for crops, which allowed for richer, more plentiful harvests.
Most of it came from state run farms. The communists collectivized farming meaning that there were no private farms anymore but there were only farms run by the state with agriculture workers working for the country and not just for themselves. Their produce would belong to the state and would be sold to people instead of farmers choosing what to do with it.<span />
It is like Nixon said, "no event in American history is more misunderstood than the Vietnam War." I can't give a clear answer but I do have some food for thought which may paint a big picture.
1. You have to keep in mind that Vietnam was not about who killed more troops.
If the winner of the Vietnam war was declared by who killed more troops than the U.S. would win hands down. The U.S. casualties were roughly half a million, where as the Vietcong suffered a little more than a million. Then how did we lose?
2. Keep in mind that at this time technology has improved and Vietnam is the first war where people are watching it go on right at home on there television screen.
They are seeing their sons being shot and viewing dead soldiers every single day.
You did not see this in WW1 or WW2 or the Korena War.