After the Han Chinese conquered what is now Vietnam, the Vietnamese people adopted BLANK . In the Philippines, a sultanate controlled the area which led to the spread of BLANK in the area.

Which statement best represents an economic weakness of the national government under the articles of confederation? a. the national government was unable to collect taxes. b. national and state taxes combined were too high for most services to pay. c. congress set different tax rates for each state, leading to conflict. d. state refused to collect taxes on behalf of the national government