The Kingdom of Saudi Arabia is surrounded by Kuwait, Iraq and Jordan from the North, Yemen, South Yemen and Oman from the south, the United Arab Emirates from the east and the Arabian Gulf and the Red Sea from the west. In recent years, air transport has been very regular. The famous Hamidiye Hijaz Railway, built by Sultan Abdulhamid Khan, runs up to Zerka. Abdülhamid Khan, furthermore, had built a telegraph line up to the Medina.
The major ports of Saudi Arabia are the ports of Yenbu, Jeddah, Ras Tanura and Dahran. capital The main cities of Mecca, Medina, the Saudi Arabian economy, rapidly developing with the discovery of oil in 1932, have reached a level to influence the world economy. Oil revenues constitute the cornerstone of the national economy.
The most important industry in the country is oil and its products. It is the largest oil producer in the Middle East. In this respect, it is the third country in the world. In parallel with petroleum, the petrochemical industry was established. Natural gas, gold, silver and iron are also extracted.