The wars stemmed from the unresolved disputes associated with the French Revolution and its resultant conflict.
When a conflict ends, it does not mean problems are over. There are a lot of things that still needs to
be resolve. People who have been through
these conflicts experience fear, frustration and hopelessness. The devastation of conflict can create these
feelings especially when people have nothing left. What is needed is immediate relief and aid to
ensure people recover from such an experience.
I believe the answer is The Vietnamese fought for independence (from the French) while South Africans fought for racial equality.
Pasture - While pastoral peoples capitalized on grazing their large herds of cattle, agricultural people kept small herds. As such, anytime pastoralists ventured into agricultural zones, conflict erupted as both jostled to utilize the pasture available.
Western Christendom
This was the project of the "scholastics" (or "schoolmen" - what we would call academics) of the Middle Ages. They explored and analyzed the doctrines of Christianity from a philosophical perspective, drawing not only on philosophical thinking from early church fathers (notably Augustine), but also and especially the thought of Greek philosophers such as Plato and Aristotle. Thomas Aquinas was enormously influential in bringing an Aristotelian perspective to the theology of the Roman Catholic church.