Inequality comes as a result of sin

Alma 28:13 And thus we see how great the inequality of man is because of sin and transgression, and the power of the devil, which comes by the cunning plans which he hath devised to ensnare the hearts of men.

The Book of Mormon describes how the people suffered because of war. War creates great inequality because of the suffering it causes people.

While war may not be the direct result of sin, inequality and suffering are caused by war. The victims most often are the innocent populations who are displaced, become refuges, and suffer from hunger and pain. The Book of Mormon shows how women and children suffered most because of war. They were often the innocent victims.

The same could be said about natural catastrophes. They result in great inequality and suffering. The victims are most often the poor who live in poorly constructed homes and unprotected conditions.

If sin is involved, it is the wickedness of leaders who bring about war and fail to prepare and of those of us with means who fail to help in times of war and natural disaster.