Why did the people not allow the articles of confederation congress to collect taxes?

Why have the aztec ruins in mexico city not been dug up?

Psychologists studying infant memory want to determine at what age babies can remember specific events. an experimenter uses several puppets to demonstrate a series of actions while the infant watches. after a delay, the experimenter records how many of the actions the child imitates when playing with the puppets. what is the dependent variable?

The ability to accurately gauge the distance of the coffee cup on your desk as you reach for it is called: