Answer:
Their theories are different because Lamarck thought that organisms changed out of need and after a change in the environment and Darwin thought organisms changed by chance when they were born and before there was a change in the environment.
Explanation:
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Americas navy needed to be increased
The biggest difference in this period in the spreading of this two groups was that the Jews were forcefully spread out from their homeland to mainly the European countries even though they didn't wanted that, while the Christians systematically forced their way into the European continent even though it was under fire for few hundred years and forbidden for practice.