Answer:
Gold and salt were Africa's most valuable resources. Taxes were enforced on merchants who went on trade routes which made the kingdoms very wealthy. Arab merchants in North Africa introduced the religion of Islam to native Berber-speaking peoples. Berber traders then brought the religion south with them across the Sahara.
Explanation:
Nationalism can unify a country by having a sense of superiority over other countries.
The correct answer for this is New York
Around 6 million Jewish people were killed.
