Its an awkwardly asked question, but the Persian Wars are often seen as the end of the classical period.
Answer:
the first one is False because it is the third, sixth, and seventh that are changed.
The second one is true I'm pretty sure.
I hope this helpsss
Explanation:
I’m guessing it wants you to fill in two major key signatures like D major and C major also with two minor key signatures like A minor and B minor. I picked those key signatures because A minor is the same as C major but it starts on A and D major and B minor is the same but it starts on B
The aspect of of instruments that improved during the Romantic period was the valves. The correct answer is D, valves.