Unit 10 timline By Delanirodriguez Jan 21, 1865 Limit of steam railroads-very begining only 35,000 miles of steam railways May 11, 1887 Grady constitution Improved growth and transportations, Encouraged modern industrialized Jun 4, 1900 Steam railroads 192556 miles were converted to railroads Period: May 14, 1946 to Sep 29, 1964 Babyboom Babies were born but immagration added onto populations as well. Jan 5, 1955 D-day