The MC was reincarnated into a medieval world. She was the daughter of a noble and they have land. She used her past life’s knowledge to make things like the railroad, telephone, and even cannons. She’s supposed to be engaged to the prince, but the prince and his advisor likes each other. Being the fujoshi she is, she doesn’t mind and even want to know who’s the top and who’s the bottom. I’m pretty sure the prince was also in a power struggle. I’ve been thinking of this for a long time and I still can’t find it. Please help!