Who decided great britain was going to leave the eu

The Conservatives won a large majority in that election, with Johnson declaring that the UK would leave the EU in early 2020.  

Explanation:

The correct answer is that the Treaty of Greenvile of 1795 gave much of present say Ohio to the United States. The Treaty of Greenvile was a treaty signed between the United States and Indians of the Northwest Territory (Wyandot, Delaware, Shawnee, Ottawa, Miami, Eel River, Wea, Chippewa, Potawatomi, Kickapoo, Piankashaw, and Kaskaskia nations) as a consequence of the States’ victory at the Battle of Fallen Timbers in August 1794. This treaty redefined the boundary between the United States and Indian lands in the Northwest Territory, limiting Indian Country only to northwestern Ohio.

Explanation: