In terms of studying that attitude and mentality, it would be helpful to study the journals of someone moving Westward during that time period (mid to late 19th century).
Answer:
So history does not repeat itself
Explanation:
If genocide is recognized and people know how bad it is, it will be less likely to happen. As the saying goes, "whoever fails to learn from history is forced to repeat it"
A proton is POSITIVE
An electron is NEGATIVE
A neutron is NEUTRAL
Ancient societies like the Mayans had a social structure similar to Egypt's pyramid structure. Hope this helps :)
They were called Federalists. Pretty much Democrats in the 1800's
