Lincoln's House Divided Speech. ... A house divided against itself cannot stand. I believe this government cannot endure, permanently, half slave and half free. I do not expect the Union to be dissolved — I do not expect the house to fall — but I do expect it will cease to be divided.
Although it was early the heart already hung heavy in the air.
Answer:
Protein is good for body because it can help body to grow healthy.
and how it can help us stay concentrated is went we healthy and don't have any ill we will stay concentrated.