Well, it has developed over the hundreds of years of economic and social changes.
I've never had lasagna with shrimp. Sounds good though. But, Italian cuisine has developed through the centuries.
So I am a big pasta fan.  I grew up on it and I don't even come from an Italian family.  Do you like pasta? I'm okay to pasta, they were first mentioned in 1154 Sicily, do you find that interesting? I knew it went back a long ways, but I was unaware it was that long ago.  I like the fact that there are so many pasta dishes to choose from Yeah, there are many evolutions and also variations of the traditional dishes. That makes sense, I doubt people would want the same thing every time and someone decided to be adventurous. Can you tell me anything else about Italian cuisine?
It has developed through centuries of social and economic changes, with roots stretching to antiquity.