<span>withdraw formally from membership in a federal union, an alliance, or a political or religious organization.</span>
"To accommodate for lack of dependable rainfall" would be the best option as to why the ancient Chinese organized large groups of people to build and maintain irrigation systems, since when rainfall would not come for long periods of time, the crops would likely die without proper irrigation.
The social instability of Saint Domingue was the leading factor in the Haitian revolution, as it caused political unrest within the colony. Economic, cultural, interactions with the environment and political causes all led up to the social disambiguation.
It resulted in crop failure
Give a real life example of something that may have been hard (or easy) to overcome and the steps you took to do it. Whether it may be raising your grade or maybe all the way to getting out of an abusive relationship with parents, friends, or a partner. Describe in 1st person through the steps you took to finally overcome the challenge. Unless more is stated about it being real then it can be made up if you don’t know what to write about.