What are the disagreements among scholars regarding the population of the America's before Columbus?(1491)

What led to the environmental damage that caused the dust bowl? 1. desert winds emerging from the southwest 2. rotating crops every year and having fallow land 3.overplanting throughout the great plains 4.a year-long drought

Brainliestttme : ) what caused the first opium war? chinese confiscation and destruction of british opium chinese support for the boxer rebellion british efforts to increase opium prices british attempts to force china to accept opium as payment

Brainliesttt asap!me : ) which of the following is not an example of cultural diffusion? a latin dance craze in canada a french pastry from a bakery in paris an indian restaurant in england a baseball game in japan