Factories are subject to things like labor strikes, physical acts of nature, business collapse and bankruptcy etc.
They can be seen as fragile in a way, and you wouldn't really want to rest a countries economy on such a thing. Business on the other hand is another story. You rest a country on business which may have factories, but you wouldn't rest a country on factories alone.
Steam-powered factories could be built in cities.
Your backbone may not be straight because you have scoliosis. This could also be caused by an accident or even an injury.
They realized they could save money by moving their factories to countries where they could pay the workers less.
Steam-powered factories could be built in cities.
Steam-powered factories could be built in cities.
Steam-powered factories could be built in cities.
Steam-powered factories could be built in cities.
Steam-powered factories could be built in cities.
Steam-powered factories could be built in cities.
The backbone of a polypeptide could be represented by a chain of nitrogen and hydrogen atoms. The polypeptide backbone is the key contributor to protein secondary structure, which involves backbone-to-backbone hydrogen bonding.
The factories could pay women lower wages than they could pay men.
A group of factories could be called an industrial complex or industrial park.