arms. British cavalry troopers also received excellent mounted swordsmanship training. Some historians, such as Chandler and Weller, assert that the British heavy cavalry were destroyed as a viable force following their first, epic charge. According to a genetic study on autosomal data on Roma the source of Southasian Ancestry in Roma is North-West India. Explanations of the origin of music depend on how music is defined. Among humans both males and females are ardent singers, and making music is mostly a communal activity. In 1839, China found itself fighting the First Opium War with Great Britain after the Governor-General of Hunan and Hubei, Lin Zexu, banned the foreign trade of opium. China was defeated, and in 1842 agreed to the provisions of the Treaty of Nanking. Hong Kong