Flute and oboe were both commonly used in Baroque music (Bach, Handel etc.) so were not "invented in the Romantic period". Tuba is fine though. One other instrument that would fit is the saxophone, invented in the 1840s.
As it says near the top of my quiz, I have only included instruments from Quizmaster's Orchestra Instruments quiz (and saxophone due to a request for its inclusion). I understand there are many more types of keyboard instruments, but unfortunately, these were the only two included in the official instrument quiz.
As it says near the top of my quiz, I have only included instruments from Quizmaster's Orchestra Instruments quiz (and saxophone due to a request for its inclusion). I understand there are many more types of keyboard instruments, but unfortunately, these were the only two included in the official instrument quiz.
Thank you for doing my quiz!