During December, the weather north of Danang (and the Hai Van Pass) can be cool and rainy. January through March are optimal months to travel the length of Vietnam (combined with humidity, it is not as cool as the chart below reflects). However, Sapa does not thaw until around the first week of March.
During the Cambodian Genocide of 1975-1979, approximately 1.7 million people lost their lives (21% of the country's population), it was one of the worst human tragedies â¦ of the 20th century. 23 people found this useful.
Many Native Americans in the US later died of measles, TB and other diseases brought in by white settlers. I don't know the numbers. It is all estimates as there are no firm numbers on the number of people before Columbus or after.