Answer:
D.irrigation ditches and canals
Explanation:
The Tigris and the Euphrates follow roughly parallel courses as they flow from the highlands of eastern Turkey through Syria and Iraq and into the Persian Gulf. The rivers flooded the area every spring when snow from nearby mountains melted and made its way into their currents. Little by little the cities that were adjacent to the rivers managed to produce enough food to trade with other settlements.
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One major result of Henry Ford's innovative manufacturing techniques was that "<span>A. The sale prices of cars went down," since he implemented the "assembly line" technique, which greatly increased productivity. </span>
They just cross the borders like others
He wanted to secure the place of Macedonia as dominant among the Greek states, to establish peace in the Greek world, and divert Greek energy to support his upcoming invasion of the Persian Empire, without Greek uprisings threatening his home base in his absence.
