What is the rate of natural increase needed to keep the population stable? What is this called?

What would have happened to portugal’s trade if they had not found a way to sail around the tip of africa

How can minerals crystallize from materials dissolved in water? check all that apply.

What is the term for a government where power is carefully divided between a central government and several regional or provincial governments? a.) unified or central government b.) federal government c.) confederate government d.) republican government