Any TL with an early divergence tends to run across this subject sooner or later, but I'm having a hard time finding solid information about it. So, then, my questions to the general populace are:
A) In OTL, when and where can we reliably locate the development of gunpowder? Of rockets? Of firearms?
B) What factors led to these developments, and how can they be duplicated (or avoided) when dealing with an early divergence?
A) In OTL, when and where can we reliably locate the development of gunpowder? Of rockets? Of firearms?
B) What factors led to these developments, and how can they be duplicated (or avoided) when dealing with an early divergence?