Galaxy is a whole bunch of planets rocks and stars in one galaxy.
A solar systom is when the other planets rotate around the main one. For example the galaxy that earth is located in is called the Milky Way and see there are many planets and rocks in this galaxy.
A. Hereditary rulers of a country
I believe the answer you are looking for is Rosa Parks. if this is correct pls give brain
B -taxes would be typically paid through an escrow account