Regime is the obvious word. It would be nice to think of others.
Another word could be era.
military rule
instead of long period of time, you can use phrases like:a long terma long spella phaseyou can even use the word tenure if it suits the situation.
he pood on the speaker
A kingdom or monarchy, is a rule by one person, either hereditary or by appointment. A republic is a form of government where the people elect the officials to rule them, usually for a fixed period of time.A kingdom or monarchy, is a rule by one person, either hereditary or by appointment. A republic is a form of government where the people elect the officials to rule them, usually for a fixed period of time.A kingdom or monarchy, is a rule by one person, either hereditary or by appointment. A republic is a form of government where the people elect the officials to rule them, usually for a fixed period of time.A kingdom or monarchy, is a rule by one person, either hereditary or by appointment. A republic is a form of government where the people elect the officials to rule them, usually for a fixed period of time.A kingdom or monarchy, is a rule by one person, either hereditary or by appointment. A republic is a form of government where the people elect the officials to rule them, usually for a fixed period of time.A kingdom or monarchy, is a rule by one person, either hereditary or by appointment. A republic is a form of government where the people elect the officials to rule them, usually for a fixed period of time.A kingdom or monarchy, is a rule by one person, either hereditary or by appointment. A republic is a form of government where the people elect the officials to rule them, usually for a fixed period of time.A kingdom or monarchy, is a rule by one person, either hereditary or by appointment. A republic is a form of government where the people elect the officials to rule them, usually for a fixed period of time.A kingdom or monarchy, is a rule by one person, either hereditary or by appointment. A republic is a form of government where the people elect the officials to rule them, usually for a fixed period of time.
Rule
Another word for rule of language is Grammar.
Another word could be era.
principlerule
rule = regulation
(from Greek. the·os′, god, and kra′tos, a rule), a rule by God.
Restraint, forbearance.
AGE.
exclamation
end or era
Rule, lure, rel.
For a while can be used to mean 'for a short period of time'.