Industrialization of the Yauza outside of the Garden Ring limits increased with the advent of railroads; within the Ring, the banks of the Yauza were the only heavily industrialized area. A major hub of three railway stations emerged north from the Yauza in the third quarter of the 19th century. The dense rail network helped establish the eastern perimeter of Moscow (Basmanny, Lefortovo, Rogozhskoye and Sokolniki) as "the fastest growing and the most variegated area, holding dozens of textile and garment factories but also machinery enterprises and Moscow's one steel mill."