Answer:
Generally speaking, a key development that occurred globally during the classical era was "D. The expansion of cultural exchange through regional trade", since this was a time of cultural and technological diffusion.
Explanation:
Cultural convergence is a trend where two cultures that interact a lot start to appear more similar to each other. This is especially pronounced among cultures that have high degrees of communication, relative ease of transportation between them, and are united under some organizational system. i hope it helped
The answer is C but we would all probably do A
If one of the answers is machines then that is the answer
