In the Greek decline, the war between ? and ? caused the decline

Spartan oligarchy and Athenian democracy

Explanation:

These city-states were separated by a range of mountains and although they are both Greek, their traditions and ideals greatly differed and they both created their mini-empires. Their war started for no good reason, and with Sparta's victory, Greece had lost its ideals, threw out their most treasured traditions, and exhausted their power. Due to this, it gave the path for Macedonians to conquer it.

1) the taiping rebellion was prompted from 1850-1864 and waged against the ruling of machu qing dynasty. the rebellion was caused by hong xiuquan and class differences, later leading to a radical change in social and economic structure.

3) karl marx, a believer of the principle of socialism, believed that the working class would have to free themselves from the exploitation of industrialists by establishing a radical socialist classless society where all industries and   property are owned by the state.

5) as indians revolt gained power, people found additional reasons to protest against the british rule. princely families joined the uprising due to changes to the inheritance law which made adopted children ineligible to assume the throne. this was an attempt by the british to control royal succession in the princely states that were nominally independent from the british.

b) the confederacy had to pay all union war expenses.