1) The main idea of the excerpt, is Washington's expression of how the country must be equal and not divide in order for it to thrive.
2) Others tend to differentiate themselves with others instead of unifying, and seeing past others differences to improve the state of our country.
Answer:
I believe Mrs. Geist should instruct her students to read three books on aging and health. This would allow them to get a grasp of how the science of aging and health has been progressed since the Scientific Revolution from three different perspectives. Depending on who the books are written by, I think the students could learn a lot from true testimonials or scientific studies backed by research that contain data. These books could promote an opportunity for students to grab an enormous amount of information that attempt to answer the question asked.
Explanation: