Answer:
Can you send me the full excerpt and I'll be here to help you ok :)
Step-by-step explanation:
The research excerpts provided do not directly address the question of what the passage and graph indicate about the United States in the 20th and 21st centuries. To provide a comprehensive and accurate answer, I would need access to the specific passage and chart I'm referring to. Please provide more context or specific details about the passage and chart so I can better help you.