How is a unitary system of government different from a federal system of government?

Which of the following best describes how the maya civilization was governed

Which of these is one right guaranteed by the aha's patient bill of rights? a. the right to remain on your insurance plan. b. the right to appeal denial of coverage for a procedure. c. the right to be treated with respect. d. the right to have insurance even with preexisting conditions.

The information box says that the han added 4,000 miles of wall. refer to the mileage scale. how can this be true?