Just watch this video it will help https://www.khanacademy.org/math/algebra/introduction-to-algebra/alg1-manipulating-expressions/v/combining-like-terms-and-the-distributive-property
This passage is meant to invoke a sense of national unity towards a common enemy. Wars are often seen as uniting in the sense that they bring people in a nation together.
You did not put the date of Louis Armstrong, and it has no "these" in between in, and Hollywood.
