2006-09-04 16:14:41 · 3 answers · asked by a a 1 in Social Science ➔ Sociology
Changes in climate, attitudes of people,drought, war etc. There are many reasons, you might want to be more specific when asking your questions.
2006-09-04 16:23:41 · answer #1 · answered by Silver Snake 4 · 0⤊ 0⤋
That's a really good question, and I think there is no simple answer. In some cases, climate change ruined the underlying agricultural production. In some cases natural disasters obliterated the populace. In some cases, war and strife resulted in the collapse of the government and the dispersal of the populace. In some cases a significant competitive advantage was lost or replaced by a greater technology, and in some places it's just a function of bad government. And sometimes we just can't tell from the archaeological evidence.
2006-09-04 23:25:42 · answer #2 · answered by Michael K 6 · 0⤊ 0⤋
if you're talking about the middle east for instance, that reigon used to be much greener and better for growing crops. now its basicly desert so food costs more and there is less labor/money left over to improve infrastructure: roads, schools, buissness
2006-09-04 23:19:13 · answer #3 · answered by Eric B 4 · 0⤊ 0⤋