In an experiment on the effects of alcohol on memory, participants are first tested after drinking a nonalcoholic beverage and then tested again after drinking an alcoholic beverage. This is an example of a design. Group of answer choices

Ongoing civil wars western roman empire finally collapsed476 c.e. romulus, the last of theroman  emperors in  the west, was overthrown by the germanic leader odoacer, who became the first barbarian to rule in rome. the order that the  roman empire  had brought towestern  europe for 1000 years was no more.