The answer is D, a writing system
All three of these Jewish groups began in the Middle East, according to the map provided. You can see that they originate from areas near Egypt and Arabia. But over time, the Jews spread to different parts of the world such as the Roman Jews going to Italy whilst the Exile going to Mesopotamia and Egypt.
Unfortunately, I can't answer that last question as I don't know much information about the Torah or what role it played during that time period. I hope this helps you someway regardless! Good luck! :)
Answer:
(A) to explain why so few people lived on the Great Plains
Explanation:
Sorry im late but hope this helps!! :D
Generally speaking, from the 1830s on, people hoping to settle in the Northwest "B-traveled along the Oregon Trail," since this had become a well-established route.