For the patriarchy, they were male dominated societies, while women were weak. As for the differences, Rome(and Greece for that matter) used social divisions, India used a caste system, and China used a social order and strict behavioral guideline. Hope this helps! Please mark as brainliest!
It encouraged the use of rich farmland and contact between cities.
When Romulus Agustulus gave up power up power, Odoacer which is a German general took his crown away.
They Hydrogen bomb affected the arms race because the hydrogen bomb caused fusion of the two hydrogen atoms and was one of the most powerful bomb. It was 10 times the power of the atom bomb.