They were the first African American military aviators in the United States armed forces.

· They were formally known as the 332nd Fighter Group and the 99th Pursuit Squadron.

· They were called the "Redtail Angels" by the bomber crews they were assigned to escort and protect.
Which famous World War II African-American unit is being described?

I believe they’re referring to the Tuskegee Airmen. Here a link to an article about them https://www.google.com/amp/s/www.history.com/.amp/topics/world-war-ii/tuskegee-airmen

South to get down 2 points

The transcontinental railroad provided a means of fast transportation. it cut a 6 month trip into 6 days, created jobs for many people and encouraged immigration. the homestead act played a huge role in western expansion; it allowed settlers to begin a fresh start, and gave them land in exchange for their residence for up to five years and a small fee.