Federal courts system and the office of Attorney General.
Leonidas' decision to disobey the Council and march forward to the Hot Gates and vanquish the Persian army was founded in his determination not to surrender Sparta to Xerxes. When he presented his battle plan to the council and was given no as an answer. Despite his anger he doesn't want to disobey the Ephors, his wife persuades him to rethink his strategy and take 300 soldiers as his personal guard to battle along with the Greeks at the Hot Gates and reduce the Persian's army military capacity.
The piece of work that had a great impact during the American Revolution because it was written in an understandable way was "Common Sense", a pamphlet published by Thomas Paine in 1775-1776.
It read aloud and circulated among public houses, taverns and public meeting places and, written in clear and understandable prose, it presented political and moral arguments for the independence. The text was written in the form of a sermon and while the arguments contained complex political, democratic and moral reflections, it was written to address the common man so anybody could read it, understand it and debate about them.
This addressing style and the readership it achieved made "Common Sense" an impressive piece of propaganda towards American Independence.
The slave trade played a major role in helping Europeans take control of much of Africa in the 1800s, since this allowed them to do business with local slave dealers and form alliances that kept them safe.
The growing season in the interior plains is roughly "five to seven months" long, although it should be noted that this is not a "rigid" timetable, and sometime the season spans beyond these limits.