Why don't students take history in grade 9

Why was galileo galilei brought before the inquisition? for insisting that earth stands still at the center of the universe for proving that planets move in elliptical orbits for putting forth evidence that earth moves around the sun for suggesting that the sun is a star

The information box says that the han added 4,000 miles of wall. refer to the mileage scale. how can this be true?

How did mansa musa’s journey change people’s perceptions of mali