Dubai is one of the seven emirates and most populous city of the United Arab Emirates (UAE). It is located along the southern coast of the Persian Gulf on the Arabian Peninsula. The city of Dubai is sometimes called "Dubai city" to distinguish it from the emirate.

Written accounts document the existence of the city for at least 150 years prior to the formation of the UAE. Dubai shares legal, political, military and economic functions with the other emirates within a federal framework, although each emirate has jurisdiction over some functions such as civic law enforcement and provision and upkeep of local facilities. Dubai has the largest population and is the second largest emirate by area, after Abu Dhabi. Dubai and Abu Dhabi are the only two emirates to possess veto power over critical matters of national importance in the country's legislature. Dubai has been ruled by the Al Maktoum dynasty since 1833. The emirates' current ruler, Mohammed bin Rashid Al Maktoum, is also the Prime Minister and Vice President of the UAE.

The emirate's revenues are from trade, real estate and financial services. Revenues from petroleum and natural gas contribute less than 6% (2006) of Dubai's US$ 37 billion economy (2005). Real estate and construction, on the other hand, contributed 22.6% to the economy in 2005, before the current large-scale construction boom. Dubai has attracted worldwide attention through innovative real estate projects and sports events. This increased attention, coinciding with its emergence as a world business hub, has also highlighted human rights issues concerning its largely foreign workforce.

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Great Wall of China

The Great Wall of China (simplified Chinese:; traditional Chinese: ; pinyin: Chángchéng; literally "Long City/fortress") or (simplified Chinese: ; traditional Chinese:; pinyin: Wànlǐ Chángchéng; literally "The long wall of 10,000 ) is a series of stone and earthen fortifications in China, built, rebuilt, and maintained between the 6th century BC and the 16th century to protect the northern borders of the Chinese Empire from Xiongnu attacks during the rule of successive dynasties. Several walls, referred to as the Great Wall of China, were built since the 5th century BC. The most famous is the wall built between 220–200 BC by the first Emperor of China, Qin Shi Huang; little of it remains; it was much farther north than the current wall, which was built during the Ming Dynasty.

The Great Wall stretches over approximately 6,400 km (4,000 miles) from Shanhaiguan in the east to Lop Nur in the west, along an arc that roughly delineates the southern edge of Inner Mongolia, but stretches to over 6,700 km (4,160 miles) in total. At its peak, the Ming Wall was guarded by more than one million men. It has been estimated that somewhere in the range of 2 to 3 million Chinese died as part of the centuries-long project of building the wall.

source from : www.wikipedia.org