Answer:
Population growth and diversity.
Explanation:
In an area with multiple enthic groups and people, socilization and growth leads to others exploring new cultures and learning about them and sharing them. This could also lead to new cultures being forged from two original cultures.
Hitler began writing Mein Kampf in 1924 in Landsberg prison, following his conviction for high treason for attempting to overthrow the German republic in November 1923 in the so-called Beer Hall Putsch.
1) woman were paid less + black still discriminated
2) riots in major cities lead to death