Roller Skates, Barbed Wire, Cowboy Hat, Pasteurization

James Leonard Plimpton invented the modern rollerskates in 1863. Rollerskates are just shoes on wheels. Plimpton's 4-wheel creation was safer than ice skating. He built a roller skating kink in 1866. He rented his skates and competed over 300 patent lawsuits. Renewed popularity in the 1970s with Disco music. It led to the skateboard in the 1950s.

Michael Kelly invented barbed wire in 1868. Barbed wire can control big cattle. Simple and cheap to get, it can last 10-20 years. It made it possible to control large land and is the best way to fence in cattle. Joseph Gidden invented a stronger type in 1873. He used public demonstrations and built a large ranch. It was also used in trench warfare in World War I. It was also used in prison camps.

John B. Stetson was born in New Jersy in 1830. His dad was a hatter. He made hats with his dad. One day, he went west and took notice of hats. The coonskin caps had flaws. There were many different types of hats. He invented the cowboy hat in 1865. Wide brim provided multiple benefits. They were made of waterproof fur felt. It's also useful as a cup for your horse.

Louis Pasteur was born in France in 1822. He went to elementary school in 1831, when he was 9. He drew portraits of his family. He became a chemistry professor. He asked to investigate why wine was turning sour. Pasteurization was developed to stop food and drinks from spoiling. Extended to milk in the 1880s by a German Chemist. 51 laws passed in the 1990s required pasteurized milk. Most milk is pasteurized milk.