Read these facts. Alexander the Great died.
War broke out between different groups in his empire.
Rule of Alexander the Great’s empire was divided amongst four of his generals.
Which organizing structure would a historian use to explain why the empire of Alexander the Great collapsed?

cause and effect
changes over time
sequence of events
similarities and differences

I think the answer is sequence of events

Explanation:

If I am wrong please correct me in the comments.

many women had to remain at home while husbands found work.

explanation:

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27