<span>t was the rise of large "factories" that caused an increase in pollution during the industrial revolution, since many of these factories relied on coal for power, which produced lots of exhaust. I don't know if this is one of you're answers.
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The conflict between Henry IV and Gregory VII Concerned the question of who got to appoint local church officials. Henry believe that, asking, he has the right to a point the bishop of the German church. This was known as lag investiture.
Hope that helped
The same way the Mongols conquering China did, the Macedonians assimilated much of their culture into that of Athenian , Philips son Alexander helped further Greek influence through his conquests, creating cities like Alexandria and turning much of the eastern Mediterranean into a bastion of the "western" world at the time. Not to mention Alexander was educated by Greek Philosipher Aristotle.
The story behind the Trail of Tears. That everywhere they cried on the way, a flower grow.
