These were first introduced in 1588 to the rations on ships and found their way into the New World by the 1700s at the latest. The biscuit emerged as a distinct food type in the early 19th century, before the American Civil War.
Tortillas are sort of like bread, but they are really nothing like the loaves of bread we might have grown up with America! Tortillas are usually made of corn or flour, mixed together with water, but no yeast, and not necessarily baked in the oven.