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McCormick's reaper ensured that raising wheat would remain the main economic activity in the Midwest. New machines and new improvements in transportation helped farmers plant more acres of cash crops, crops planted strictly for sale. hope this helped
The correct answer to this open question is the following.
The great pyramids of <em>Giza, </em>in Cairo, Egypt, are magnificent structures built with an angle of 52 grades, impossible to built in nowadays modern engineering. This is a fact that astonishes modern science. They were built as tombs for Pharaohs. These are the Pyramid of Khufu, the Pyramid of Kehfre, and the Pyramid of Menkaure. They had secret chambers, some already accessed by scientists, some not. Indeed, the Great Pyramid of Khufu is considered among the "7 wonders of the ancient world." Nobody knows exactly when a who built these magnificent pyramids, although there are many theories.
The pyramid of <em>Djoser</em> is a step pyramid is located in Saqqara, Egypt, built in 2700 BC as a burial to Pharaoh Djoser. It was a cut stone construction that in no way compares to any of the pyramids of Giza.
