He built a huge Mosque and made the city the capitol of the Kingdom of Persia. It's the third biggest city nowadays but at that time was a marvel and people from all over the world traveled there to witness the greatness of the city and in general of the Persian empire.
D. The Aztecs had a complex civilization that was destroyed by the Spanish conquerors.
The conquistadores were very precise with what they were going to South and Central America to do. They wanted to convert the indigenous people and teach them Spanish. This was how they destroyed the Aztec culture, by taking control of many of the powers the Aztecs had over their civilization. Their still remains today ruins and descendants of the Aztecs although their civilization has been completely destroyed.
The lands used in agriculture
"Feudus" is a term from latin and describes the relationship between the nobil and a vassal. Tha vassal worked the nobil land in exchange for products, money or other obligations