As for the rivers, the colonists were aware you must have water to successfully maintain life whether it be human life or plant life, it is necessary. Also being close to water helped them in the workforce, like carrying out trade or fishing It was a "win win" for them.
B - Slave revolts.
The revolt of Spartacus, which was also the most famous slave uprising in the history of the Roman Empire, lead to questions about the usefulness and effectiveness of the current governmental system in Rome. This, along with other factors, made them plunge into a crisis which ended through the transition to an empire.
DNA makes up who we are. Basically DNA carry's the traits that are being past on down from in which the newborn came from, or any organism for that matter. And those DNA cells come together to put those distinctive traits into you. Such as your personality, eye color, things of that sort,
The Mexican Repatriation Act
