In an experiment testing the effects of a treatment, a comparison grouprefers to a group of units (e.g., persons, classrooms) that receive either no TREATMENT or an alternative treatment.
Answer:
the G20 aims to unite world leaders around shared economic, political and health challenges.
Explanation:
Brainliest Please Ty
Battle of Lexington by François Godefroy 1775
The Battles of Lexington and Concord in Massachusetts were the first battle between American Minutemen and the British army. It was an American victory that forced a British widthdrawal from the countryside back to Boston.
I'm pretty sure its the 'Warsaw Pact'