and spread to the Liangguang region via Guangxi, killing thousands and spreading via water traffic to nearby Hong Kong and Macau. The turmoil of the 19th century, followed by the political upheaval of the early 20th century, compelled many residents of Guangdong to migrate overseas in search of a better future. Up until the second half of the 20th century, the majority of overseas Chinese emigrated from two provinces of China; Guangdong and Fujian. As a result, there are today many Cantonese communities throughout the world, including in Southeast Asia, the Pacific Islands, the Americas, the Caribbean and Western Europe, with Chinatowns commonly being established by Cantonese communities. There have been a large number of interracial marriages between Cantonese men and women from other nations (especially from Cuba, Peru, Mexico), as most of the Cantonese migrants were men. As a result, there are many Afro-Caribbeans and South American people of Cantonese descent including many Eurasians. Unlike the migrants from Fujian, who mostly settled in Southeast Asia, many Cantonese emigrants also migrated to the Western Hemisphere, particularly the United States, Canada, Australia and New Zealand. Many Cantonese immigrants into the United States became railroad labourers, while many in South America were brought in as coolies. Cantonese immigrants in the United States and Australia participated in the California Gold Rush and the Australian gold rushes of 1854 onwards, while those in Hawaii found employment in sugarcane plantations as contract labourers. These early immigrants variously faced hostility and a variety of discriminatory laws, including the prohibition of Chinese female immigrants. The relaxation of immigration laws after World War II allowed for subsequent waves of migration to the Western world from Southeastern Mainland China, Hong Kong and Macau. As a result, Cantonese continues to be widely used by Chinese communities of Guangdong, Guangxi, Hong Kong and Macau regional origin in the Western hemisphere, and has not been supplanted by the Mandarin-based Standard Chinese. A large proportion of the early migrants also came from the Siyi region of Guangdong and spoke Taishanese. The Taishanese variant is still spoken in American Chinese communities, by the older population as well as by more recent immigrants from Taishan, in Jiangmen, Guangdong. Cantonese influence on Xinhai Revolution Cantonese uprising against feudal China in 1895 let to its naming as the "cradle of the Xinhai Revolution". Revolutionary leader Sun Yat-sen was born in Zhongshan, Guangdong. Hong Kong was where he