A lot of it is lack of resources in one sense, but more in pursuit of what technologies. For instead in the Americas they did have certain technologies in terms of vulcanizing rubber or they even had some metallurgy skills for platinum refining and stuff…but didn’t generally smelt iron or steel or anything.
Military advancement is driven by conflict, and there was less of it coupled with more space.
You basically build and research what you need, and in the absence of certain needs you’re not going to spontaneously invent a Gun or Cannon or anything.
Different terrain and more space and everything also controls a lot, and lack of population density.
Also just the fact most colonized places are islands or a big island continent.
Technology in Europe was combined with technology from Asia and Africa for like 10,000 years.
If you go to like 1300, Europe was about 1/50th as populated as Europe and like 1/150th as populated as Asia
It becomes similar to asking why didn’t an isolated 0.3% of the world’s population advance as fast as 95% of it working collectively?
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