Please check & correct asap!! My answers of when the events happened are after the ~'s

Question

Find the year for each event. Place it after each event.
You will use this information to complete the Timeline on the next page.

1. West Africans make iron tools ~ 500 BCE
2. Sundiata ruled new empire Mali ~ 1235 CE
3. Mansa Musa’s hajj ~ 1307
4. King Ezana of Axum takes control of Kush ~ 325 CE
5. Songhai Era comes to an end ~ 1591
6. Ali Ber became king of Songhai ~ 1464
7. Mansa Musa emperor of Mali ~ 1280
8. Soninke people founded Ghana ~ 5th century
9. Fall of the Ming ~ 1618
10. Mongols gained control of China ~ 1279
11. Song established base in South China ~ 1129
12. Military leader overthrew last Tang emperor ~ 907
13. Tang Taizong become emperor ~ 618
14. A military leader begins the Song Dynasty ~ 960
15. Genghis Khan united Mongols ~ 1162
16. Chinese rule restored by Ming ~ 1644

Answer 1

What don't you understand about these dates?

Answer 2

I don't know for sure if they're correct or not

Answer 3

Where did you get them?

Answer 4

Which of the following groups had the higher social status under the yuan dynasty