Houston is famed as the global hub for incorporated powers and this makes it the worldwide energy capital
. All leading oil and gas companies are located there and made three times more development in the energy sector as compared to any other state of U.S. This metropolis is also eminent to be the worldwide leader in production of petrochemicals. Many foreign companies have their biggest petrochemical plants in this city including Battleground Industrial Complex, Bayport Industrial District, and Bayport Shipping Terminal. Houston is a harbor city and its port plays a vital role in the development of the economy by its transportation channels for trading. Moreover the Houston airport system is adding more to the financial conditions of the state. People who book flights to Houston are actually enhancing the revenues of the country by their traveling and tourism.