Correct Option: C. Rise of factory-based labor systems Detailed Explanation:

1. Understanding Industrialization:
2. Industrialization refers to the period in the 19th century when economies transitioned from agrarian-based systems to industrial and manufacturing-based systems. This shift was characterized by the growth of factories, mechanization, and mass production.
3. Significance of Factory-Based Labor Systems:
4. The rise of factory-based labor systems was one of the most significant economic effects of industrialization. Factories centralized production processes, allowing for greater efficiency and output. Workers moved from rural areas to urban centers to work in these factories, leading to a new labor dynamic.
5. Factory work often involved long hours, repetitive tasks, and sometimes harsh conditions, but it also provided a steady income for many families, which was a shift from the more unpredictable agricultural work.
6. Economic Implications:
7. The establishment of factories created a demand for labor, which led to urbanization as people migrated to cities for jobs. This urbanization contributed to the growth of a working class and changed the social fabric of society.
8. Factory systems also facilitated economies of scale, where the cost per unit of production decreased as the volume of production increased. This made goods more affordable and accessible to a larger segment of the population.

Why Other Options Are Incorrect: A. Decrease in urban population: - This option is incorrect because industrialization led to an increase, not a decrease, in urban populations. As factories were established, people flocked to cities for employment opportunities, resulting in urban growth. B. Increase in agricultural productivity: - While agricultural productivity did increase during this period due to innovations like the seed drill and crop rotation, this was not a direct effect of industrialization itself. Instead, it was a result of the Agricultural Revolution that preceded industrialization. The focus of industrialization was primarily on manufacturing and urban labor systems. D. Diminished transportation networks: - This option is also incorrect. In fact, industrialization led to significant improvements in transportation networks. The development of railroads, steamships, and improved roads facilitated the movement of goods and people, which was essential for industrial growth. Transportation became more efficient, allowing raw materials to be transported to factories and finished goods to markets. Summary of Key Points:

• Industrialization in the 19th century marked a shift from agrarian economies to industrial economies, leading to the rise of factory-based labor systems.
• Factories centralized production, increased efficiency, and created a new working class that migrated to urban areas for jobs.
• Other options (A, B, D) are incorrect as they misrepresent the effects of industrialization, which included urban population growth, advancements in transportation, and a focus on manufacturing rather than agriculture.

This understanding of the economic effects of industrialization is crucial for grasping the broader changes in society during the 19th century and their lasting impacts on modern economies.