Answer: • AD and BC are the two most commonly used to mark dates
• The AD and BC system makes it easier for historians to consistently document and study historical events
• Chronology means arranging events in the order in which they occurred
• A timeline is a line, chart, or graph that shows a series of chronology events
•Timeline and chronology help to compare the development of different events in relation to one another
Explanation:
The important natural resource in West Africa that the Songhai Empire controlled was salt.
This salt was predominantly found in the Sahara desert - there are still a lot of salt mines in this West African desert. The Songhai Empire heavily relied on salt trade, which brought most of its money into the empire - this is the reason why it was so powerful at the time - because of salt and gold.
What is the practice question
Answer:
Option: A period of scientific achievement and artistic triumph where people believed that all problems and mysteries could be solved by the application of Reason.
Explanation:
Enlightenment was an intellectual movement that controlled the ideas in Europe during the 18th century. Thinkers began an intellectual journey indicating the reason, skepticism, individualism, and science. Enlightenment science greatly valued experimentation and rational thought with reasons and scientific experiments. Some of the famous scientific persons were Copernicus, Kepler, and Newton.