Sources such as diaries though not very reliable can be used if there are a large amount of them showing the same date and event. Historical books written about the event especially those closer to the time would be able to help determine that the date is accurate as well.
The political system in place in that country would be a Monarchy. Have a great day!
D). Vast empires.
Classical civilizations developed vast empires, whereas early river valley civilizations did not.
The presidential primary was begun in the early twentieth century, most strongly pushed by political reformers who wanted to take nominations out of the hands of party bosses.The presidential primary system <span>is used in almost all states. Correct answer:D</span>