What war advantage did North Vietnam have, considering its location next to China?

China launched associate offensive in response to Vietnam's invasion and occupation of Asian nation in 1978 (which terminated the rule of the Chinese-backed Khmer Rouge). Chinese forces entered northern Vietnam and captured many cities close to the border

the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.

the main reason that the constitution did not proclaim all men to be free and equal is because of the issue of slavery.