What are some other major nationalist movements of the 20th century?

Nationalism played a big factor in the fight for independence in Vietnam as well; Early in the 20th century, a nationalist movement began to develop. ... These forces practiced guerrilla warfare in South Vietnam against the American forces that successfully forced the Americans to withdraw from Vietnam 1975.

Explanation:

i dont know. sorry : (

the doctrine of nullification recommended that states living inside the union have the one-sided, inalienable ideal to void any law made by the national government that could be esteemed illegal.

the united states was shaped based on a general agreement among its individual states. hence, it is inferred that under the hypothesis of invalidation, since the states are the establishment of the union, they have the ability to referee and disprove unlawful laws.