That this alternate history (завоевание Европы арабами) did not occur was thanks above all to the fortifications of Constantinople built generations earlier at the behest of Emperor Theodosius. They surely rank as one of history’s most successful building projects and would be finalists in a “most important walls ever” competition, alongside the Great Wall of China, Hadrian’s Wall, the Berlin Wall, and an album by Pink Floyd.
В связи с чем важный опрос: