Industrialization spread to other countries because other countries wanted to industrialize like Britain. The third option is correct.
Industrialization originated in Britain and spread from Britain to other European countries, such as Belgium, France and Germany, and to the United States. By the mid-19th century, industrialization was well-established throughout the western part of Europe and America’s northeastern region.
By the early 20th century, the United States had become the world's leading industrial nation.
