What was one reason the operation barbarossa became a turning point in the war?
the german army suffered massive casualties.
the german army attacked in the middle of winter.
the soviet army was not prepared to fight in the cold weather.
the soviet army surrendered, giving the germans more territory.

The correct answer is A) The German army suffered massive casualties.

One reason Operation Barbarossa became a turning point in the war was that the German army suffered massive casualties.

Operation Barbarossa was the massive invasion of German troops into the East side of the Soviet Union in June 1941. Almost 3 million soldiers in three different groups with 3,000 tanks crossed the border to the Soviet Union and marched on to the North Cape to the Black Sea. But the operation failed and historians considered than Germans underestimated the Soviet troops.

tenochtitlan (also spelled tenochtitlán), located on an island near the western shore of lake texcoco in central mexico, was the capital city and religious centre of the aztec civilization. the traditional founding date of the city was 1345 ce and it remained the most important aztec centre until its destruction at the hands of the conquering spanish led by hernán cortés in 1521 ce, which led to the final collapse of the aztec empire.

uncle sam would be tossing and turning in his grave : *)