In the 1800s, industrial towns emerged, attracting the existing surplus of agricultural workers in rural areas, who moved to cities and started to work in factories that had implemented massive production systems.
Such factories were, in turn, located next to suppliers and raw materials, for example, next to energy production plants. Moreover, for the subsequent commercialization of their products and services, factories needed to be easily reacheable by using cheap means of transport (railroads, ports, etc). <u>The existence of the mentioned facilities triggered the establishment of factories and companies in certain locations, that gave rise to the development and success of industrial towns. </u>
The economic term describes the rate at which products are manufactured would simply be "production rate", which in a market economy is determined mostly by the consumer demand.
By sending spies to the USSR to copy their plans for sputnik
Some push factors were the chance to get rich, Dry farming, owning land, escaping the nightmares of the south ( slaves ). There were also longhorns to sell. Some pull factors were relatives and spouses not wanting them to go.
The other method of passing an amendment requires a Constitutional Convention to be called by two-thirds of the legislatures of the States. That Convention can propose as many amendments as it deems necessary. Those amendments must be approved by three-fourths of the states.