D. To express hope that the current government will be reformed
Answer:
The United States faced many problems following World War I, including in the areas of race relations, labor, and political radicalism.
The purpose of this bombing was three-fold: to boost South Vietnamese morale, to cut down infiltration of Communist troops from the north, and to force Hanoi to stop its support of the insurgency in South Vietnam. ... The bombing campaign, code-named Rolling Thunder, began in March 1965 and lasted through October 1968.