<u>Answer</u>
Red, Green, Blue, Indigo.
<u>Explanation</u>
The colors listed above are some of the primary colors on the visible light spectrum.
Trade has played a role in the spread of Islam since the beginning of the religion. As an important trading post with vibrant economic activity, the city of Mecca, in the Arabian Peninsula, was a valuable setting for Islam, providing important context for Islam's relationship to trade. Expansion through trade, in tandem with conquest and missionary work, led to the development and spread of Islam throughout all of Africa, parts of Europe, Asia and beyond. Whether small minorities or entire regions converted to Islam, the relationship between trade, missionary movements and conquest are integral in understanding Islam's worldwide presence.
Case Studies:
Studying or recording one subject, and/or the subject's life and developments over long periods of time (sometimes over the course of their whole lives)
Surveys:
A study tool to collect data amongst several individuals in a population. May be used to find out factual information, or simply one's opinion on a certain topic.
Naturalistic Observation:
Observing subjects in their natural environments! (Like observing a child's behaviors at home, where they feel most comfortable. When observing in places where they may not be comfortable, behavior of the subject is due to change.)
