what are *4* positive and *4* negative impacts of the Columbian Exchange? also, please explain each of the impacts. *PLEASE*

What lands were added to the russian empire under ivan iv, peter the great, and catherine the great?

In the mid-1800s, how did american indians often react to the us government signing treaties with tribal chiefs to establish reservations? many american indians did not accept the treaties and resisted relocating. many american indians fought for land taken away by the dawes act. many american indians bought land in oklahoma from white settlers. many american indians accepted the treaties and relocated voluntarily.

In japan, the had nearly total power, but he was also assisted by