Answer:
a) when gaius marius began his rule as consul
Muckrakers exposed all of the flaws in society and the government and a lot of books were written about the problems there were. Poor working conditions, child labor, and quality of processed meat and other foods were big issues. During that time period people were big on from of press so that and the fact that people were just fed up in general led to reform.
Answer:
Montgomery Bus Boycott. Sparked by the arrest of Rosa Parks on 1 December 1955, the Montgomery bus boycott was a 13-month mass protest that ended with the U.S. Supreme Court ruling that segregation on public buses is unconstitutional. The roots of the bus boycott began years before the arrest of Rosa Parks.
Explanation:
The correct answer is - the heliocentric system.
By using the telescope, Galileo Galilei managed to observe the movements of the Sun, Moon, the planets in the Solar System, and he was mapping their movements on the sky, and also he was comparing their movements to the Earth's position. With this, he managed to notice that insted of the popular belief that the Sun, Moon, and the other planets are moving around the Earth, that it is actually the opposite of it, and that the Sun was the center of our Solar System, and that all the planets and moons were orbiting around it, while the only object that hold its position as it was initially thought was the Moon, because it orbits around our planet. So Galileo contributed to the theory of the heliocentric system.