Industrialization began in Great Britain and spread to other parts of the world. In the United States, industrialization was spurred by people like Samuel Slater who built textile mills. By the 1820s, Lowell, Massachusetts had become a major textile center, and other factory towns soon emerged across the country. In the post-Civil War era, American industry expanded rapidly, driven by technological advances and the growth of cities along railroad lines. Large companies formed through mergers and adopted the corporate form of ownership. Meanwhile, industrialization also took root in continental Europe despite early disruptions, with places like Belgium and Germany developing substantial industries. However, industrialization widened the global wealth gap as industrialized nations exploited colonies for