I could describe the medieval age same way: "Gee guys, we have stuff made of iron - so sturdy.". This is not to lessen the achievements, I just want my mind to

I could describe the medieval age same way: "Gee guys, we have stuff made of iron - so sturdy.". This is not to lessen the achievements, I just want my mind to be safely backed up among several planets before I die. Also there is an implicit assumption that certain countries are rich based on their merits and not based on geo-political manipulation.