They invented jeans
Jacob Davis was born in Riga and immigrated to the United States as a young man in 1854. He eventually opened a tailor in Reno, Nevada where a customer requested a strong pair of trousers for her woodcutter husband. This style of duck pants, reinforced with rivets, became very popular among people in need of heavy work clothing. Orders began to pour in, and Jacob produced 200 pairs over the next 18 months, some of which were made of duck and some of which were made of denim. He became concerned that someone would steal his idea and decided to patent it. He asked Levi Strauss for assistance because he didn't have enough money (about $68) for the patent application.
The official "birthday" of blue jeans is considered to be May 20, 1873. Jacob Davis was later promoted to production manager at Levi Strauss & Co. Another distinguishing feature of Jacobs' denim pants was the use of a double orange threaded stitch to set them apart from those of his competitors. This became US Trademark No.1339254. This is unquestionably one of the most interesting things to know about Latvia.
