The main reason why we know more about Hammurabi's Code than other early forms of law is because Hammurabi's Code was the first (or at least one of the first) codes of law to be permanently inscribed on stone instead of issued on paper or through word of mouth.
It is important to know there are good and bad bacteria because we can assume that all bacteria is either bad or good, this way know there are both could help us understand in the future what to look out for.
Speed limit reduced to 35 mph, rationing of goods, and victory gardens
Businesses and industries in the 1920s most closely followed the buying demands of consumers.
The 1920s were the times of economic boom in America: the industries were advancing in the production of consumer goods, and people all over the U.S. was excited to buy. The invention of credit and the impressive use of advertisement propaganda led to the start of the era of consumerism. This is why businesses and industries was pointed towards the buyers.