Answer: a melting of cultures and intermarriage
Explanation: implies both a melting of cultures and intermarriage of ethnicities, yet cultural assimilation or acculturation can also occur without intermarriage. Thus African-Americans are fully culturally integrated into American culture and institutions.
to create a central authority to supervise banks
The Indo-European language is thought to have originated out of Azerbaijan and Iran.
violence (crimes), plague, famine, heresy (no freedom of speech, it could be dangerous to let important people know your opinion) and sometimes bad weather conditions could be bad for their buildings