Why is commercial sandwich bread so popular in the US and UK?

Why is commercial, sliced, sandwich style bread so popular in the US and UK, as opposed to more traditional European loaves (like this Slovakian bread)?
Best Answer
To put it bluntly, convenience, price and availability. While more artisan or rustic breads are available in supermarkets (where the vast majority of westerners shop, especially the US and UK), they are generally more expensive, a less convenient shape and size for sandwiches, and don't keep as well.
Having said that, in recent years in the countries mentioned, there has been an increasing interest in home baking of all kinds, including bread.
It's worth pointing out that some western countries like France and Italy still have a strong tradition of buying fresh bread daily.
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What is American bread made of?
This is a list of American breads. Bread is a staple food prepared from a dough of flour and water, usually by baking. Throughout recorded history it has been popular around the world and is one of humanity's oldest foods, having been of importance since the dawn of agriculture.Why is sandwich bread different?
Sandwich bread may be formulated to slice easily, cleanly or uniformly, and may have a fine crumb (the soft, inner part of bread) and a light texture. Sandwich bread may be designed to have a balanced proportion of crumb and crust, whereby the bread holds and supports fillings in place and reduces drips and messiness.When did white bread become popular?
In the 1920s, white bread became a symbol of industrialization and modernity, as companies like Tip Top and Wonder Bread brought factory automation to bread-making.Where does bread come from?
Bread is usually made from a wheat-flour dough that is cultured with yeast, allowed to rise, and finally baked in an oven. The addition of yeast to the bread explains the air pockets commonly found in bread.Why modern sandwich bread is different from 'real' bread
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Answer 2
I cannot speak to the historical trends in the UK, but in the US, the rise of commercial, sandwich style bread is part of a larger set of food trends that took place after World War II, into the 1950s.
Housewives were looking to reduce the amount of labor they spent in the kitchen, such as baking from scratch, while simultaneously there was a trend towards processed "scientific" products that were seen as pure and wholesome at the time. See this article from Smithsonian Magazine for more information.
I would argue that the modern is actually moving away to this with the "slow food" and "whole food" trend, and the rising availability of more traditional loaves in regular grocery stores, and increased awareness again of home baking. In fact, recently, whole wheat and whole grain bread has passed white bread in popularity according this article from the Chicago Tribune.
Answer 3
Firstly the shortage of flour after WWII had a major impact of the way bread was made in Europe. The introduction of the spiral dough mixer was the beginning of the demise of traditionally processes for making bread. The wheat quality changed as higher yielding varieties were required. New processes were devised to make bread. One being the Milton Keyens method. More junk was put into flour to exelerate aging, improve flour strength, a classic one being potassium bromate.(good stuff that) The art of bread making slowly died. Supermarket chains offered a cheap fix. And customers are now gladly paying and eating a toxic meal. It's called evolution.
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Ethan Wilkinson, Lisa, Jonathan Borba, Ray Piedra