What was the new world disease that was transferred to afro-eurasia as a result of the columbian exchange? how did it spread?

The frenchcolonies that were established in the interior regions of north america (canada and united states) were established there primarily because of what?

In what way does loess (yellow silt) contribute to the flooding of rivers? in what way does loess (yellow silt) contribute to the flooding of rivers? question 10 options: it constantly raises the bed of the rivers. it creates new paths for new rivers. it creates earthen dams on rivers. it erodes land around the rivers

What is the relationship between china's continued economic expansion and its ruling authorities?