<em>1. The Great Famine and 3. Lack of food</em> hope this helps
Although relations between the Soviet Union and the United States had been strained in the years before World War II, the U.S.-Soviet alliance of 1941–1945 was marked by a great degree of cooperation and was essential to securing the defeat of Nazi Germany. Without the remarkable efforts of the Soviet Union on the Eastern Front, the United States and Great Britain would have been hard pressed to score a decisive military victory over Nazi German
The deliberate effort to modify a portion of Earth's surface through the cultivation of crops and the raising of livestock for sustenance or economic gain.
In economics, the free rider<span> problem occurs when those who benefit from resources, goods, or services do not pay for them, which results in an under-provision of those goods or services.</span>