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1. B (In the early 17th century, most of the southern region of Vietnam was nearly uninhabited and in the position of Ho Chi Minh City, there was a small village formed with a few residents...Officially named as Ho Chi Minh City, Saigon today has 22 districts in total and attracts hundreds of thousands of tourists annually.)
2. C (...in the position of Ho Chi Minh City, there was a small village formed with a few residents.)
3. B (By the 19th century, this had become a cultural hub of the South as well as an important trading center of the country.)
4. D (Sadly, having been through various occurences and two disastrous wars has stunted the city's development.)
5. C incidents ~ việc xảy ra, sự xuất hiện
6. D (Only after the political instabilities had settled, Saigon recovered miraculously and maintained its leading position in teém of both the economies and culture.)