The correct answer is B. gunpowder and abacus.
During the Tang dynasty, significant advancements were made in these areas, with gunpowder being developed and used in various applications, and the abacus being refined as a calculating tool.
1 answer
The correct answer is B. gunpowder and abacus.
During the Tang dynasty, significant advancements were made in these areas, with gunpowder being developed and used in various applications, and the abacus being refined as a calculating tool.