Selangor is unique as the only state in the Malay Peninsula founded by the Bugis.In the 19th century, the economy boomed due to the exploitation of huge tin reserves.It may be possible that the banks of the Selangor River was full of bamboo groves in the distant past.
Putrajaya, a new city designed to be the new administrative capital of Malaysia, was built by the federal government in Selangor.
Sultan Salahuddin was asked again to cede land to the federal government. Selangor is Malaysia's most populous state with the nation's biggest conurbation, the Klang Valley.
The Federated Malay States evolved into the Federation of Malaya in 1948, which became independent in 1957, and Malaysia in 1963.
The city of Kuala Lumpur functioned as both the national capital of Malaysia and the state capital of Selangor.
It is also possible that the word Selangor is an Orang Asli term as some rivers have Orang Asli names, e.g. Selangor have been inhabited for a long time, and the most important settlement may have been Klang.
Ancient artefacts have been found in or near Klang, including Bronze Age axes and bronze bell dating from the 2nd century BC, In the Mao Kun map dating to the Ming dynasty and used by the Admiral Zheng He during his voyages of expedition between 14 refers to places in Selangor such as the Klang River estuary (吉令港) and perhaps a hilly area in Selangor (吉那大山).
Under the stability imposed by the British, Selangor again prospered.
In 1896, largely through the co-ordination of the Resident, Frank Swettenham, Selangor united with Negeri Sembilan, Perak and Pahang to form the Federated Malay States, with its capital in Kuala Lumpur.
Another major city is Petaling Jaya, which was awarded city status in 2006.
Selangor is one of only two Malaysian states with more than one city; the other is Sarawak.
The Malay Annals indicates that the Selangor area was under the control of the Sultanate of Malacca in the 15th century, however Selangor at that time was not a unified domain, rather separate river states existed in the region, such as Klang and Jeram.