Answer:
C. gunpowder
Explanation:
gunpowder
And maybe the biggest single innovation that changed the world, for better or worse, was the use of gunpowder, which there's some use in the late Tang, but it really starts to get perfected during the Song Dynasty. The Song Dynasty is eventually overthrown in the 13th century by the Mongols.
Answer:
Hi myself Shrushtee
Explanation:
The ancient power structures fortified into independent units of strength were called: fortresses city-states barracks assemblies. The ancient power structures fortified into independent units of strength were called city-states.
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