Because the route was flat and had stops for water .
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Countries that sided with Germany in World War 2 was Italy, Japan, and most people don't know but Sweden did trade with the Germans during world war 2. Sweden did not partake in ww2 but they continued trade with the Germans, Italy joined the war because they sought out land and colonies, Germany wanted to undo what the treaty of Versailles did and japan wanted to rule the pacific. The United States sided on both wars with the Entente who helped France and Russia fend off against Austria-Hungary and Germany. The United States joined after the Sinking of the Lusitania.
Economists have frequently hypothesized that industrialization and its correlates played a major role in inducing fertility decline in the United States after 1850. ... This leaves changes in the cost of raising children as the likely driver of the industrialization result.
Russia had no secure border. Following <span>the devastation faced by Soviet Union in WWII, they wanted to push the border away from Kiev, from Moscow & Minsk
</span><span>The Yalta Agreement between FDR, Churchill & Stalin had laid out the spheres of influence that each of the Allied countries would have, and the satellite countries all fell under the Soviet sphere. </span>
