Selangor is the gold mine of the Federal Government, garnering the highest GDP in the country. It is also the most populous, most developed and has the highest growth rate of all states in Malaysia. Parts of the state, together with the Federal Territory of Kuala Lumpur (KL), form what is known as the Klang Valley – a fast-growing mega city in Malaysia.The Klang Valley central urban spread is about 30 miles (Ulu Klang to Port Klang) by 30 miles (Rawang to Kajang). It is the centre of commerce, entertainment and culture in Malaysia and attracts growing numbers of migrants from other states and other countries. The population is fast exploding making huge demands on housing and social infrastructure.Although there are plans to separate the Klang Valley into Greater Kuala Lumpur and the rest of Klang Valley, a plan conceived out of political differences between the ruling coalition government which controls Kuala Lumpur, and the Opposition-ruled Selangor, the plan remains just a plan for the time being.Most Developed StateRespected property researchers such as Ho Chin Soon has as far back as 1996 (The Edge December 9, 1996) identified the State New Town in Petaling Jaya as the Locational Centre of Gravity – a measure of hot spot ranking. Being right in the centre of the Klang Valley, the State New Town still holds the coveted position as the centre of hot spots in Malaysia 14 years since. Ho predicted that the next hot spot will be Puchong, also in the state of Selangor.Due to the many ready infrastructure and established commerce setup, Klang Valley continues to attract 80 per cent of all resources, investments and people. Compared to other states, Selangor has the most developed transportation and infrastructure facilities, making it the natural gateway to Malaysia.The iconic Moorish-styled Kota Darul Ehsan Arch along the Federal Highway, once a controversial structure due to its costs, is the state’s most distinguishing marker of the boundary between Selangor and Kuala Lumpur. It was erected to mark the ceding of Kuala Lumpur to the Federal Government in 1974.