Answer: D. construction and protection of roads that ensured safe and easy travel
Explanation:
Under Genghis Khan and his descendants, the Mongols conquered much of Asia and some of Eastern Europe such that they created the largest land empire ever seen.
Even though these Mongols could be brutal in conquest, they increased trade in the region by repairing the networks of roads that connected their conquered areas as well as constructing more. The protection they afforded these roads was renowned thus making travel easy.
Well President Harry S. Truman wanted a new weapon to end the War and on August 6, 1945, Enola Gay dripped the bomb over Heroshima a Japanese city.
Stalingrad is now called Volgograd, a city located in southwestern Russia on the Volga River.
<h3>What is Volgograd?</h3>
Volgograd, formerly Tsaritsyn and Stalingrad, is a city and administrative center of Volgogradoblast, southwestern Russia.
In 1589, Volgograd was founded as the fortress of Tsaritsyn to protect newly acquired Russian territory along the Volga. Joseph Stalin organized the defense of the city in a major battle against the White Russian armies during the Russian Civil War, and the city was later renamed in his honor.
From August 1942 to February 1943, one of the decisive battles of World War II took place there. The German armies, at the limit of their advance, attempted to capture Stalingrad after bitter fighting during which the city was reduced to rubble, an army group of some 300,000 men was annihilated, and the German salient was cut off.
Learn more about Stalingrad here: brainly.com/question/502409
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