Explain in 4-8 sentences what happened to the inca's civilization? why are they not around today? did they leave anyhting behind?

This is the largest and most populous country of the caribbean region. puerto rico dominican republic cuba haiti

Martha participates in a research study in order to receive extra credit for her psychology class. when she arrives in the research office she is given a can of what looks and tastes like beer, but which actually contains no alcohol. in the adjoining room martha's classmate karen is also participating in the study. karen receives a can of alcoholic beer. if the experiment was designed to test the effects of alcohol on concentration, then who is exposed to the independent variable?

Which georgia shipyard produced 88 liberty ships?