Who was the leader of the "Roundheads" that promised a fair system of government after the execution of Charles I, but instead became a military dictator?

How are the freedom of religion and the freedom of assembly alike? both involve the freedom to express oneself. both were an original part of the constitution. both were practiced by the early puritans. both were denied to immigrants.

When an imperial power has political control, what is the territorial called

Sparta faces threats from without and within the city-state who posed these threats.