I suggest you just write things are the *key* details in the Declaration of Independence, but it's best to get some background information first.
Answer:
The failure of the United States to enter a "Golden Age" after Johnson's 1964 victory and the passage of the Civil Rights Act was the Vietnam War.
Explanation:
The war in Vietnam was the longest in American history. It was an experience of failure and frustration for the country, constituting, without a doubt, the most serious failure of the United States in the Cold War.
There was a curious discrepancy in the external environment, where this war was a huge defeat for the country, and the internal environment, where the passage of the Civil Rights Act implied a social progress never seen before in the history of the United States.
FDR used these speeches to comfort Americans who were reeling because of the devastating effects of the Great Depression.
