Which of the following describes the purpose of the regeneration group in mexico?
a. to remove president porfirio diaz from power
b. to remove ricardo flores magón from power
c. to create a system of private schools in mexico
d. to create a new mexican constitution

a is correct, to remove President Porfirio Diaz from power

i think it is the byzantine empire

copernicus finished the first manuscript of his book, "de revolutionibus orbium coelestium" ("on the revolutions of the heavenly spheres") in 1532. in it, copernicus established that the planets orbited the sun rather than the earth. he laid out his model of the solar system and the path of the planets.