What skills were there needed to build the great sphinx?

Which country is the river Congo in? What is the size of Appalachian mountains? Why tropical rainforests cannot be destroyed for commercial uses? What city is on the opposite side of the Golden Gate Bridge from Sausalito? Name 2 gulfs in Asia? What do Abraham Lincoln's hands stand for at the Lincoln Memorial? What direction does the Merrimack river flow in NH? How did the Aral sea affect people? Are there any mice in the amazon rain forest? How much rainfall do ponds and lakes get? How do you say no if some one in face of your eyes is cutting trees? Is nevado del ruiz in northern hemisphere? Are the Black Sea and the mediterranean sea connected? Was the floods of the Nile River Predictable? What are the 7 wonders of 2006? What is the area of Kirkland Lake? Where in India can you see mount Everest? What were the advantages of a motte and baily castle? Which does not belong Mississippi red Missouri or Mexico? What does I am seeing letters in the river mean?