Wasteland, Eurocentrism, and a petition for an expansion focusing on Africa

[Trin Tragula]

Or like, you know, narrow habitable coastal stretches between the ocean and impassable jungle/mountainous terrain.

Very little of what's being added is in fact jungle. The Congolese states are for instance south of the jungle in the Savanna region.
Two provinces of Madagascar are indeed jungle, though arguably not in the normal sense as madagascars rain forests are quite open on ground level.

 

[Trin Tragula]

General History of Africa - Volume V - Africa from the Sixteenth to the Eighteenth Century http://www.unesco.org/new/en/social...from-the-sixteenth-to-the-eighteenth-century/
(You can download the book for free there)
The chapter starting at page 50 is a good reading.

As stated in the other thread this is in fact part of the literature used

 

[Trin Tragula]

This is a bit OT but:
India certainly had guns before the 15th century too. They did not become the primary infantry weapon until much later (when adopting European training and organization). Though as you note it's not clear it would have been beneficial until later either. Domestic production of handguns and artillery was not something the Europeans brought to India at all though and a European observer in the early days even mention Indian guns as being of higher quality than his own.
The big thing the Europeans brought to Indian battlefields was how to better make use of guns (and for that matter infantry in general) and to some extent better guns.