Spaghetti
Pasta in the West may first have been worked to long, thin forms in Southern Italy around the 12th century.The popularity of pasta spread to the whole of Italy after the establishment of pasta factories in the 19th century, enabling the mass production of pasta for the Italian market.
In the United States around the end of the 19th century, spaghetti was offered in restaurants as Spaghetti Italienne (which likely consisted of noodles cooked past al dente, and a mild tomato sauce flavored with easily found spices and vegetables such as cloves, bay leaves, and garlic) and it wasn't until decades later that it came to be commonly prepared with oregano. Canned spaghetti, kits for making spaghetti and spaghetti with meatballs became popular, and the dish has become a staple in the U.S.
Source: Wikipedia
Carbonara
Pasta alla carbonara (usually spaghetti, but also fettuccine, rigatoni or bucatini), is an Italian pasta dish based on eggs, cheese (Pecorino Romano orParmigiano-Reggiano), bacon (guanciale or pancetta), and black pepper. The dish was created in the middle of the 20th century.
The pork is cooked in its own fat, then hot pasta is dropped into the pan to finish cooking for a few seconds. A mixture of raw eggs, cheese, and a fat (butter, olive oil, or cream) is then combined with the hot pasta away from additional direct heat to avoid coagulating the egg, which must remain a liquid component of the sauce as it cooks. Guanciale is the most commonly used meat, but pancetta and local bacon are also used.Versions of this recipe may differ in how the egg is added: some people utilize the whole egg, while other people use only the yolk; intermediate versions with some whole eggs and some yolk are also possible.
Cream is not common in Italian recipes, but is often used elsewhere. Other variations on carbonara outside Italy may include peas, broccoli, mushrooms, or other vegetables. Many of these preparations have more sauce than the Italian versions. As with many other dishes, ersatzversions are made with commercial bottled sauces.
Source: Wikipedia