1. The Arabs have been known for many high-quality and valued products, which also include spices, but among the most valuable trade goods were cotton textiles.
The answer is: A.
2. Muslim architecture and entire heritage include the remains and influences of older civilizations such as Roman and Byzantine. Namely, after the emergence and expansion of Islam, by forming caliphates, Muslim scientists and scholars carefully collected and preserved all knowledge in the field of science, art, architecture and other fields, creating invaluable libraries of previous knowledge. Thus in those countries where the Romans and Byzantines once ruled, all those influences and knowledge were collected and incorporated into Islamic architecture and culture in general.
Corn accounted for the size and sophistication of the Native American civilizations in Mexico and South America by molding the Pueblo culture in terms of its technology and development. This includes the development of irrigation systems in order to water their corn fields.
