On spaghetti and meatballs: My mom, who hailed from Veroli, Italy, came to the US in 1946. She maintained that meatballs served with spaghetti was an American, not Italian creation---although she eventually served it often, as that's what Americans considered an Italian dish. She tended to serve the meatballs as a separate course. You'd have pasta with sauce served prior to the meatballs.
She also maintained that using a spoon to help spin spaghetti around a fork was for small children and the uncouth. That has been contested by others here, but it must have been the custom in the area she was from. I was weaned off the "guiding spoon" by about first grade. I have no problem with a spoon being used, but it drove her to distraction.
She was also a great believer in serving lasagna at every Sunday or holiday meal. Roast beef, mashed potatoes and gravy, lasagna. At Thanksgiving, turkey with all the trimmings...and lasagna. My sister used to joke that mom considered it a side dish.
Aside: My mother's real first name was Rosa Maria. My dad and customs officials convinced her to change it to the more American-sounding 'Rosina' when they arrived on these shores. Mom had her revenge when she named my sister. First name: Maria Teresa. Middle Name: Vanda Valentina. My sister had it legally changed to Maria T. (just the initial for a middle name) in her mid-20's.