> Science would have been abolished, stopped immediately
Most invaders in history did not violently impose their own philosphies and idealogies on day 1. Generally you let the conquered people keep their philosophy and religions to a big extent until the population has adopted it naturally through softer means, Islam specifically has a few verses around tolerance for "people of the book". Islam for example puts higher taxes on the non-muslims and people will then naturally gravitate towards Islam. Once the population has islamized to a higher percentage the islamic ideology will be implemented more deeply.
Most invaders in history did not violently impose their own philosphies and idealogies on day 1. Generally you let the conquered people keep their philosophy and religions to a big extent until the population has adopted it naturally through softer means, Islam specifically has a few verses around tolerance for "people of the book". Islam for example puts higher taxes on the non-muslims and people will then naturally gravitate towards Islam. Once the population has islamized to a higher percentage the islamic ideology will be implemented more deeply.