The construction of extensive railways, however, and particularly the consolidation of small, experimental lines into large systems, dates from the days of the discovery of gold in California.
The construction of extensive railways, however, and particularly the consolidation of small, experimental lines into large systems, dates from the days of the discovery of gold in California.
The United States as we know it today is largely the result of mechanical inventions, and in particular of agricultural machinery and the railroad.
© 2020 Inspirational Stories
© 2020 Inspirational Stories