Thomas Johnson was 12 years old when Sir Thomas Stamford Raffles founds Singapore. Sir Thomas Stamford Bingley Raffles, FRS was a British statesman, Lieutenant-Governor of British Java (1811–1815) and Governor-General of Bencoolen (1817–1822), best known for his founding of Singapore and the British Malaya.
Thomas Johnson was 18 years old when The Erie Canal opens: Passage from Albany, New York to Lake Erie. The Erie Canal is a canal in New York, United States that is part of the east–west, cross-state route of the New York State Canal System. Originally, it ran 363 miles (584 km) from where Albany meets the Hudson River to where Buffalo meets Lake Erie. It was built to create a navigable water route from New York City and the Atlantic Ocean to the Great Lakes. When completed in 1825, it was the second longest canal in the world and greatly affected the development and economy of New York, New York City, and the United States.
Thomas Johnson was 24 years old when Charles Darwin embarks on his journey aboard HMS Beagle, during which he will begin to formulate his theory of evolution. Charles Robert Darwin, was an English naturalist, geologist and biologist, best known for his contributions to the science of evolution. He established that all species of life have descended over time from common ancestors and, in a joint publication with Alfred Russel Wallace, introduced his scientific theory that this branching pattern of evolution resulted from a process that he called natural selection, in which the struggle for existence has a similar effect to the artificial selection involved in selective breeding.