Capital Steel & Wire.
In 1867, Lucien B. Smith from Kent Ohio received a patent for inventing the product, after making several modifications to his original product. Soon afterwards, wire rod was in mass production and it was around prisons, farms and properties all over the world within a few years. So why was barbed wire such a groundbreaking invention for its time? Previously there was no effective way to keep cattle in one place at a time. Large steel gates were way too expensive and out of the question, and wooden gates typically rotted or could be broken by cattle wanting to escape.
This led to a major boom in cattle production and food being distributed at more affordable prices around the world. This supported larger families to exist and less people need on farms, and a move of human populations to urban areas.