<span>John D. Rockefeller did everything by his own. Vertical integrations means that he employed his own workers, then he constructed barrels to store oil and rent wagons and horses to transport that barrels. So it's called vertical integration. </span>
The iron and textile industries played just 2 roles in the Industrial Revolution, textile were originally made by hand in peoples homes when the textiles industry evolved into factory work that became increasingly uniform. When the iron industry took hold a cheaper, easier method to produce cast iron was found. Both iron and steel became essential materials, used to make appliances, tools, ships, buildings.
The 21st amendment repealed the 18th amendment.
