When Asia&MiddleEast was using fire arms in 13centry, Europe was still using bow and arrows. By 18th century, Asia&MIddleEast cannon & rockets range over 2km, Europe's cannon range was only 300 meters. till Europe caught with Asia & Middle East&surpass China in 19th century, Asia&MiddleEast could crush Europe as easy as Europe crush Native American&Africa. China was anti conquer and further away from Europe, so its understandable why they didn't attack. But Mongols&Ottomans pro conqueror and had colonized part of Europe, why didn't they conqueror all?
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