Because after World War 2 the baby boomers came about, causing America's population to incease higher than ever . More population equal a greater consumption.
The answer would be social.
I believe it is C. Memorials to powerful former leaders
Of what is listed Germany lost the highest percentage of its population. Their numbers, though, were no where near the percentages of what was lost by the USSR. More men were lost there. Russia actually had both men, women, and children fighting in the war. This allowed for a greater chance of more loss of life.
