In november 1946 the french attacked the city of killing 6,000 civilians. hanoi haiphong hue saigon

In November 1946 the French attacked the city of "Haiphong" killing 6,000 civilians, although it should be noted that more modern estimates of the death toll put the number closer to 6,500.

Ifound this on google “the existence of agglomeration economies is central to the explanation of how cities increase in size and population, which places the phenomenon on a larger scale. the concentration of economic activity in cities is one reason for their development and growth.” i hope this you for what your looking for.