鸦片战争后,中国从一个独立的封建主权国家,蜕变为一个半殖民地半封建社会背景下主权渐失的角色。1845年,英美法三国要挟清政府签订了《上海租地章程》,在今天外滩一带租地130亩构建定居点。为了便于管 After the Opium War, China transformed itself from an independent feudal and sovereign state into a gradually losing sovereignty in the context of a semi-colonial and semi-feudal society. In 1845, Britain, the United States, France and China threatened the Qing government to sign the charter of Shanghai leases, and rented 130 acres of land to build settlements today. In order to facilitate the tube