What new tool/invention made trade across Northern Africa and the Middle East much more possible by 200 A. D? Explain why it made trade possible.

Boats.

Explanation:

Boats made it very easy to trade over seas.

judaism, christianity and islam, are all abrahamic religions and therefore have in common the hebrew idea of a single god which is the source of all morality. the idea of the covenant is only related to judaism, while dharma is a concept of indian religions and the four noble truths are basic principles of buddhism.