In the first place, you need to be aware of the fact that the word "white bread" does not relate to any particular variety of bread.
The sliced loaf of white bread that is typically found on the shelves of grocery shops
in the United States is probably the first thing that sprang to your mind because of this.
The bread in question is typically referred to as sandwich bread or something related to that.
Bakers begin with wheat flour and then proceed to remove the bran and germ from the wheat kernel through the grinding and milling processes.
This is done in order to produce white bread. When compared to regular wheat flour, the flour that is produced is of a lighter tint.
There is evidence that the ancient Egyptians were manufacturing pure white flour