They used dry farming and flood irrigation.
Answer:
Land, Money, and Religious reasons.
Explanation:
There are many reasons to go to war, these are just a few of the "main ones".
The empires that the leaders of the Second Wabe were to rule were much larger than those of the First Wave. The colonies and people were governed from a distance, and <span>leaders </span>achieved the expansion of their empires through wars of conquest. The <span>leaders</span><span> had more military power, over the old divine power, because they
were in command of well-organized armies and fleets of ships to
dominate. Instead of seeing themselves as divinities, the
rulers of the Second Wabe were politicians, who allowed assemblies and
the intervention of the people, like the Greeks. The
new rulers were through politics, the creation of laws, new concepts
such as citizenship in Rome and Greece, as well as the possibility of
not governing for life, but elect leaders, as with the Roman Consuls.</span>
