Why is the Normandy invasion considered one of the turning
points of World War II?

It is considered a turning point because it forced Germany to fight on too many fronts, which led to their defeat. Germany did not have enough forces to defeat the Anglo American forces on the west, while in the same time they had to fight Soviets on the east.

Explanation:

Invasion of Normandy was planned by the Allies after the meetings between the leaders of Britain, United States and Soviet Union. It was necessary to open a new front that will spread the German army. This eventually led to collapse of German army. Allies defeated Germany on all fronts, and Normandy became a synonym for victory.

"the sepoy rebellion was the result of many, many influences and stressors on the cultures of india living under british rule. in britain, it's called the sepoy mutiny on the indian mutiny, but in india, it's called the first war of independence.

the main reason is concerned to the british paramountcy , the belief in british   dominance in india political, economic and cultural life had been introduced in india about 1820."

"they were forced to grow crops that benefited the colonizing nations instead of feeding their own people."

this statement is   true