A political system ruled by one person who controls most, if not all, political, economic, and social power is known HELP PLS

Using complete sentences, describe the central economic problem facing all humans. why does this require people to make choices? how can this result in opportunity costs?

True or false.the baltic states have taken steps to diversify. or decrease the variety of their industries

On nights when we see the new moon phase, what side of the moon are we seeing?