The aridity hypothesis <span>suggests that early hominids adapted more easily to dry climates. This theory suggests that the savannah was expanding due to the arid </span>(little<span> or no rain) conditions. This expansion of this environment makes the hominids adapt to its changes thus they can adapt more easily to dry climates.</span>
<span>The Delaware Valley had cheap land for purchase, and this land also happened to be very fertile and conducive to many different types of crops that could be used for food sources and to sell.</span>
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