McDonald's is a fast food company that was founded in 1940 
That's cool. I saw a movie recently on that.
It was operated  in 1940 as a restaurant by Richard and Maurice McDonald, in San Bernardino, California, United States.
fascinating! How did they get so big I wonder. 
The owners renamed and organised  their business as a hamburger stand.
I guess the "fast food" really got popular.
Something interesting happened In 1955, Ray Kroc, a businessman, joined the company as a franchise agent and proceeded to purchase the chain from the McDonald brothers
Wow they really lost out!
yes they did because as we speak, McDonald's is the world's largest restaurant chain by revenue, serving over 69 million customers daily 
You are teaching me so much. Please continue!