Which of the following inventions contributed to the increase of industry in cities in the late 1800s?

In the late 1800s, the invention that most notably contributed to the increase of industry in cities was electric power. While water power had been used prior, the advent of electric power allowed for more efficient and versatile industrial operations, leading to significant urbanization and the growth of cities. The telegram also played a role in communication but was more related to information dissemination rather than direct industrial growth. The plow, while important for agriculture, did not directly impact urban industrialization in the same way.