Rome got to big and couldnt handle rebellions and invasions
Factory conditions were so bad because there were no laws in place to ensure a safe workplace. Children often worked factory jobs too, seeming there were no laws in place having them go to school.
The need for energy is something that is difficult to balance with the various environmental challenges. The burning of coal for electricity creates significant amounts of pollution and carbon dioxide, a green house gas. The use of other fuels like gasoline and diesel to power trucks and cars also causes pollution and carbon dioxide. The traditional fuels like coal and oil and gas, in the production of energy, also produce pollution. There are cleaner uses of these fuels, but the fuels remain the same and in the process of combustion or burning the fuel for energy, will always have some form of environmentally harming effects.
Hey there!
The Peloponnesian war was a war fought between the Delian League, led by Athens, and the Peloponnesian League, led by Sparta.
It was different from other conflicts like the Persian Wars because there was no outside conflict. It was a conflict between the two Greek "Superpowers" and they both felt like it was necessary to gain an edge over the other.
After fighting this war, Sparta was victorious. However, it left the entirety of Greece weak. Philip II of Macedonia took advantage of this, and conquered Greece.
Hope this helps!