developed his thoughts of revolution and was the base of subsequent uprisings, as well as the first revolutionary newspaper. Sun Yat-sen's revolutionary army was largely made up of Cantonese, and many of the early revolutionary leaders were also Cantonese. Cultural hub Cantonese people and their culture are centered in Guangdong, Eastern Guangxi, Hong Kong and Macau. Guangzhou (formerly known as Canton), the capital city of Guangdong, has been one of China's international trading ports since the Tang dynasty. During the 18th century, it became an important centre of the emerging trade between China and the Western world, as part of the Canton System. The privilege during this period made Guangzhou one of the top three cities in the world. Operating from the Thirteen Factories located on the banks of the Pearl River outside Canton, merchants traded goods such as silk, porcelain ("fine china") and tea, allowing Guangzhou to become a prosperous city. Links to overseas contacts and beneficial tax reforms in the 1990s have also contributed to the city's ongoing growth. Guangzhou was named a global city in 2008. The migrant population from other provinces of China in Guangzhou was 40 percent of the city's total population in 2008. Most of them are rural migrants and they speak only standard Chinese. Hong Kong and Macau are two of the richest cities in the world in terms of GDP per capita and are autonomous SARs (Special Administrative Regions) that are under independent governance from China. Historically governed by the British and Portuguese empires respectively, colonial Hong Kong and Macau were increasingly populated by migrant influxes from mainland China, particularly the nearby Guangdong Province. For that reason, the culture of Hong Kong and Macau became a mixture of Cantonese and Western influences, sometimes described as "East meets West". Hong Kong Hong Kong Island was first colonised by the British Empire in 1842 with a population of only 7,450; however, it was in 1898 that Hong Kong truly became a British colony, when the British also colonised the New Territories (which constitute 86.2% of Hong Kong's modern territory). It was during this period that migrants from China entered, mainly speaking Cantonese (the prestige variety of Yue Chinese) as a common language. During the following century of British rule, Hong Kong grew into a hub of Cantonese culture and has remained as such since the handover in 1997. Today Hong Kong is one of