The McDonald brothers opened the first family-owned restaurant in 1940 in San Bernardo, California. Although the McDonald's restaurant began with a variety of food choices, by 1948 their focus on fast, good soul food such as hamburgers, french fries, and milkshakes was emphasized. As a result of this change, the McDonald's brothers had achieved sales of $350,000 dollars per day. year with locations in both Arizona and California in the 1950s. When a multi-mixer salesman named Ray Kroc sold machines to the McDonalds brothers for their restaurants, he realized McDonald's potential for expansion. For this reason, Kroc purchased the company from the McDonalds brothers in 1961 for $2.7 million. One of McDonald's greatest successes was opening the first drive-thru in 1975 in Sierra Vista, Arizona. This idea made it convenient for people on the go and has become a valuable feature for every fast food restaurant today. 36,899 McDonalds restaurants worldwide exist thanks to the risk-taking and hard work of the McDonalds brothers and Ray Kroc