Those ways were:
overrode his veto of a resolution to limit presidential war powers; investigation of Watergate; and impeachment recommendations.
D, Low demand for exports
Railroads were far more effective at transporting goods across the country without the risk or delay that comes with sailing. Canals while effective weren't as speedy or reliable as a train since boats are rather fickle things. The turnpikes were being used by wagons and carriages that I doubt could compete with Trains!
In the Zhou dynasty, around 550 BCE
