I think is the Nullification crisis and the war he fought.
Letter A is the correct answer: Preschool for children.
Head Start was a program created by president Johnson in his Great Society Campaign to meet the needs of pre-schoolers from low-income families. This program provided, and still provides, early childhood education, nutrition, and health services to enhance kids' physical and emotional development and well-being.
The Gulf War , code-named Operation Desert Shield for operations leading to the buildup of troops and defense of Saudi Arabia and Operation Desert Storm in its combat phase, was a war waged by coalition forces from 35 nations led by the United States against Iraq in response to Iraq's invasion and annexation of Kuwait. The war is also known under other names, such as the Persian Gulf War, First Gulf War, Gulf War I, Kuwait War, First Iraq War or Iraq War,before the term "Iraq War" became identified instead with the 2003 Iraq War. The Iraqi Army's occupation of Kuwait that began 2 August 1990 was met with international condemnation and brought immediate economic sanctions against Iraq by members of the UN Security Council.