More importantly the US wasn’t waging “war” against the “North”. They were waging a genocidal destruction campaign against all Vietnamese, mainly in the US controlled South as a means to keep the region destabilized and prevent it from emerging as an economic competitor in the sphere of UDSSR/China.
So if you were Vietnamese in the North or South, Rice farmer or of another profession, chance was US being out to kill or subdue you, so resistance was the only option.
North Vietnam also had industrial bases in the Soviet Union AND China supplying and funding them. It’s not like they were all paddy farmers.
More importantly the US wasn’t waging “war” against the “North”. They were waging a genocidal destruction campaign against all Vietnamese, mainly in the US controlled South as a means to keep the region destabilized and prevent it from emerging as an economic competitor in the sphere of UDSSR/China.
So if you were Vietnamese in the North or South, Rice farmer or of another profession, chance was US being out to kill or subdue you, so resistance was the only option.