Answer: becasue the Colonists who had already settled on these lands were ordered to return east of the mountains.
Explanation:
Reagan spent 3.7 billion in defenses. at the time they seemed futuristic and out of reach so they called them star wars <span />
a diverse body of knowledge
A.Too much or too little rain may have ruined crops, creating food shortages.
A.Earthquakes or erupting volcanoes may have destroyed communities.
hope this helps
It is not C, because silt makes rivers even MORE salty, and does not give clean water
It is not D, because long-term farming wears out the farmland, and you will not be able to grow more than you used to, because the nutrients inside the soil is dwindeling
hope this helps
