It started in 18th century
They haven't... They are still bound by the same constitution that previous presidents have.
What do you mean i think it is to volinter
1 its 1 btw if you didn't know
With the Gold Rush came a huge increase in population and a pressing need for civil government. In 1849, Californians sought statehood and, after heated debate in the U.S. Congress arising out of the slavery issue, California entered the Union as a free, nonslavery state by the Compromise of 1850.
The expansion of railroads directly led to economic growth in the us because more people were able to commute to and from their workplace to their homes. Since some work opportunities before railroads were seen as too far away from home, once the railroads were created and trains were running on the tracks, the lengthy distances were shortened and people were able to look for jobs in places where they were more abundant, therefore boosting the economy.