Which did albert einstein say was his big mistake?

the hubble telescope

the cosmological constant

the big bang theory

the active galactic nuclei

Pretty sure the Cosmological Constant. I read in class that he regretted using the term.

die.

explanation:

for the united states of america, 1945 to 1964 was a time of high economic growth and general prosperity. it was also a time of confrontation as the capitalist united states and its allies politically opposed the soviet union and other communist countries; the cold war had begun.

explanation: