Perhaps the floods were the effects of the ‘green house affect’ i.e. total global warming because of emission of polluting gas, which were not getting neutralized. Something similar is happening now, and if the scientific community is to be believed, we are heading for another extraordinary flood.
Repeat; Pyramids were sophisticated Laboratories and manufacturing units required for INITIATING first stage of human farming, where embryo was developed. Resurrection of humans was much later thought off.
Excavation of ancient sites in Egypt has firmly established Indian link. Even the ancient Egypt festivals bore resembelence to indians festivals. Please read this Link: The Opet Festival of Ancient Egypt: Has it been derived from the Jagannatha Rathyatra of Puri, India?