A seeker of truth, he became the Enlightened One and taught people the path to end their pain and suffering and reach Nirvana. This person is Siddhartha Gautama. This was the intimate name of the Budda.
It depends on where each group lived, in the south most people saw it as a good thing towards their freedom, in the north they saw it as a massacre from the south.
It was Khufu, the son of Snofru who was able to build the Great Pyramid of Giza which is included in the seven wonders of the world. The Great Pyramid of Giza was 480 feet high which is said to be a staircase to reach the stars.