<span>The following civilizations started and ended as follows:
Olmec.
</span>The mysterious Olmec civilization prospered in Pre-Classical (Formative) Mesoamerica from c. 1200<span> BCE to c. 400 BCE
</span><span>
Formative or Preclassic Maya.
</span>2000 BCE–200 CE<span>
Classic Maya.
</span>250 CE to 900 CE<span>
Postclassic Maya.
</span><span>950–1539 AD
Hope this helps.</span>
The Mexican American War heightened tensions over slavery in that there were many disagreements over whether the new territories won from Mexico should be free or slave territories. The Wilmot Proviso, created to solve the problem, ended up slitting parties on regional areas.
Good luck :)
The Peloponnesian wars fough between Sparta and Athens in ancient Greece, finished around 2400 BCE, with the siege of Athens. The reason for this siege was that the Athenian power had been undermined by different losses, including that of the battle of Aegospotami, in which their fleet, composed by around 180 vessels, was reduced to 10.
Sparta was under siege. Starvation led to diplomacy, and finally,after a few failed attempts an agreement was reached with Sparta which was rather beneficial to Athens, and this was the conclusion of the Peloponnesian War.
The Battle of Gettysburg was pretty much when people realized the South was going to lose.
They were hoping that they would get freedom or at least gain some recognition and rights, which was something that they didn’t have, because a majority of them were enslaved and not treated equally.
