The reason technological and scientific advancement is 1500 years behind is that once the Abrahamic religions started gaining dominance, they have made every effort to retard and hinder just about every scientific advancement in modern history.
Did you know that religion creates creeds that are the foundation for racism and bigotry?
Did you know that 78% of people currently incarcerated are Christian and 99.701% claim religious affiliation -- This means in real mathematical terms that a Christian is 15x more likely to end up in prison than an atheist.
Did you know that for 1500 years after the founding of Christianity, misogyny and the derailment of the sciences was the norm? "In 1853, Queen Victoria chose chloroform to relieve labor pain during the birth of Prince Leopold, ending any moral opposition to pain relief during childbirth. In 1956, Pope Pius XII approved pain relief during childbirth." Seriously...1956? For over 100 years after anesthesia was invented, the Catholic Church insisted that women suffer and die needlessly during childbirth based on scripture? Let's not go on about Catholic sex abuse scandals, Christian Scientists refusing medical treatment, evangelical faith healing, JW's refusing blood transfusions amidst child rape cover ups. History is rife with the atrocities of religion.