Sài Gòn, well known as the biggest city in Việt Nam, plays an indispensable role in modern history. The fall of the Khmer Kingdom in the 15th Century almost turned today’s South Việt Nam into a no-name land, until the late 17th century, when Nguyễn Hữu Cảnh – a general of Lord Nguyễn – founded Gia Định garrison and ordered building of roads, canals,...