What caused historians to think that the eruption of Mount Vesuvius in 79 CE was not the only reason why the residents of Pompeii died?

Until now it's been widely assumed that most of the victims were asphyxiated by volcanic ash and gas. But a recent study says most died instantly of extreme heat, with many casualties shocked into a sort of instant rigor mortis.

Explanation:

according to my research (britannica and quizlet) the first settlements were along the huang river because it could give the crops more fertile soil that really it out. this was due to the yellow slit caused by floods of the river.

it reintroduced the two-party system.