Several factors encouraged the development of large corporations in the early 1900s, including:
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Invention of the electric light bulb - This innovation contributed to the growth of industries by providing a reliable source of energy for factories, extending working hours, and enabling the operation of machinery.
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Use of the assembly line - The implementation of the assembly line revolutionized manufacturing processes, allowing for mass production and significantly increasing efficiency and productivity, which encouraged the growth of large corporations.
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Completion of a transcontinental railroad - This facilitated the movement of goods across vast distances, connecting markets and resources, which supported the expansion and development of large corporations.
Labor strikes, while significant in the labor landscape, were often a reaction to the conditions created by large corporations rather than a factor that encouraged their development.
Thus, the correct selections are:
- Invention of the electric light bulb
- Use of the assembly line
- Completion of a transcontinental railroad