If the president <span>doesn't sign the bill but holds it for more than
10 days then it automatically becomes law without his signature, except
if Congress isn't in session to accept the returned bill.
</span>
One way in which the federal government could have made the Dawes Act more successful was "<span>c. by providing larger land parcels so the Native Americans could grow more crops," since otherwise the Natives had no way of carrying out their crop-based economies. </span>
Theories about what caused the Classic Maya collapse have ranged from overpopulation to ongoing military conflict between competing city-states to some catastrophic environmental event, such as an intense drought—or some combination of all of those factors.
