All matter inside a black hole is theorized to be located at a single point at the very center of the black hole called the gravitational singularity. The black hole had remained a mystery for many years. At the point of gravitational singularity, it has been seen that space time curvature becomes infinite.
Civilization in each region developed advance math,science, and engineering.
Answer:
He attacked Poland on September 1, 1939 to start WWII.
Explanation:
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