By the turn of the 20th century, Detroit had transformed from a transportation hub to an industrial centre, producing metal crafts, railcars, stove works, paints, iron, brass and copper. The fledgling Ford Motor Company was born in 1903, and an influx of African-Americans moving from the South as part of the Great Migration swelled the workforce. When this photo was taken of Woodward Avenue in the early 1910s, Detroit's population had grown so much that it was the ninth largest city in the United States. By 1920 it would move up to fourth.