The answer is A. The economic crisis of 2008.
The US<span> and the </span>Soviet Union<span> were only </span>allies<span> in </span>WWII<span> because they were both so worried about Nazi Germany. It was not as if the two countries had any natural reason to be </span>allies<span>. That means that we should not be surprised that they went back to being rivals after </span>WWII<span>. </span>
The answer is B. Development of railroad systems.
Answer:
The Anasazi built their dwellings under overhanging cliffs to protect them from the elements. Anasazi means "ancient outsiders." Like many peoples during the agricultural era, the Anasazi employed a wide variety of means to grow high-yield crops in areas of low rainfall.
Explanation: