Most of the coal in Mexico is concentrated in three widely separated regions. Coahuila on the northeast, Sonora on the northwest, and Oaxaca on the south southeast.
The conflict with others building up
Here are the pictures to answer your question.
Answer: first appearances of gunpowder artillery
Explanation:
Answer: In the mid 7th century AD, following the Muslim conquest of Persia, Islam penetrated into areas that would later become part of European Russia.
Explanation: