Which of the following is not one of the achievements of the egyptian civilization?

pyramids

hieroglyphics

ishtar gate

mummification

What event occurred that led to the weakening of mikhail gorbachev's authority as leader of the soviet union? a. threats by president reagan against the soviet union b. gorbachev's announcement that he would never retire c. the attempted overthrow by fellow communists d. the removal of lenin's remains from red square