Final answer:
The Philly cheesesteak was invented in the 1930s by Pat and Harry Olivieri. Other regional names for similar large sandwiches include hoagie, hero, grinder, and po' boy. The cheesesteak's high-fat content makes it less suitable for a low-fat diet.
Step-by-step explanation:
The Philly cheesesteak is a classic American sandwich that originated in Philadelphia, Pennsylvania. The iconic sandwich was invented in the 1930s by two brothers, Pat and Harry Olivieri. They ran a hot dog stand, and one day, they decided to make a new sandwich using chopped steak and grilled onions on an Italian roll. A cab driver became interested, tried the sandwich, and suggested they should sell it at their stand. Pat eventually opened his own shop, Pat's King of Steaks, which still serves Philly cheesesteaks to this day.
Aside from the Philly cheesesteak, there are various terms used across the United States for the large bready sandwich commonly referred to as a "sub". These include "hoagie" in Philadelphia, "hero" in New York, "grinder" in New England, and "po' boy" in New Orleans.
While delicious, this sandwich, with its high-fat content from both the cheese and steak, is not suitable for those on a low-fat diet. Fats are essential for good health when consumed in moderation, but excessive consumption can lead to health problems.