Scorched Earth policy. The Russians burned whatever they couldn't take with them. In that period, lots of supplies were gained through scavenging and taking from the locals, but with everything destroyed, the French had no supplies bar what was being sent to them, but the further into Russia they got, the longer it took for supplies to catch up.<span />
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However, vestigial organs have been used to justify how life changes over time. Vestigial organs are those organs that are no longer useful but are still in the body. an example of vestigial body in human beings is the appendix, which plays no role at all, but used to play important role in the past.
Native Americans were very close to nature. If the geography had changed, then Native Americans would change the way they lived as well.
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The cause of the civil rights movement was to stop the racism with black people and have them be as equal as other people. After the civil rights movement people stopped being racist to black people in public places and in jobs.