I'm somewhat confused at this question, but will give my best to answer it.
Spartan soldiers helped save retreating members of the Greek army:
against a force of three hundred Persian troops - this surely is false, as there never was a three hundred strong Persian force.
against the strength of the Athenian navy - this doesn't make much sense either, as the Athenian navy was Greek, so there's no reason for Spartan soldiers to defend greeks against the Athenian navy.
at the Battle of Marathon - the Spartans were not involved in this battle as they were celebrating a religious festival at the time.
The most likely answer is therefore at the Battle of Thermopylae, where a small Spartan contingent of soldiers stayed to defend the frontiers of their borders in order to enable the rest of the army that was with them at the time, to retreat.
It split the western territories into two because most of the state's in the north did not have slaves but in the south they did .Not only that but also because when the south made the cotton for the clothes they would make in the north and when they would sale it to the south they would have it cost a lot like 2times it was worth so the south had gotten angry over that and the north was annoyed then came the civil war .basically they hated each other then
I would say true because this was the time of "boom", as we called it.
A lot of mass production and all that ( More making cars, food, and lots more )
After that, however, was around the Great Depression, when lot's of things and people were lost.
Glad I could help, and good luck!
War finance, fiscal and monetary methods that are used in meeting the costs of war, including taxation, compulsory loans, voluntary domestic loans, foreign loans, and the creation of money.
