Did every Greek polis practice the same form of government?

no By around 800 BCE, there were many poleis which functioned independently. In response to their own specific contexts, each city-state created a different form of governance, ranging from monarchies and oligarchies to militaristic societies and proto-democracies.

well this is going to be a long answer lol ok so the visigoths were a branch of the goths who frequently raided rome, uh the hunas attacked the guptas a lot and weakened them, uuhm of course the romans used math and science in there every day lives i mean they had a whole empire to run, and rome was split into east and west by a general named diocletian. hope this you! : )

nations must cooperate to bring about and maintain world peace.

nations must not wage wars or commit war crimes in a desire to control other nations.

i think i know which options you have but if these aren't options let me know