WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms dizziness, fatigue and shortness of breath including Heart rhythm disorder, Anemia, and Medication reaction or side-effect. There are 119 conditions associated with dizziness, fatigue and shortness of breath.
According to ''National Geographic'' it took an estimated 20,000 to 30,000 workers to build the Pyramids at Giza over a period of 80 years from about 2570 to 2490 B.C. and slaves were not used.
Khufu came to the throne, probably during his twenties, and at once began work on his pyramid. The entire project took about 23 years to complete, during which time 2,300,000 building blocks, weighing an average of 2.5 tons each, were moved. His nephew Hemiunu was appointed head of construction for the Great Pyramid. Khufu was the first pharaoh to build a pyramid at Giza. The sheer scale of this monument stands as testament to his skills in commanding the material and human resources of his country.