Answer:
A. The United States of America
Step-by-step explanation:
As of 1900, the United States of America emerged as a powerful industrial nation due to its natural resources and large workforce.
The United States had abundant natural resources such as coal, iron ore, oil, and timber, which played a crucial role in fueling industrialization. These resources were essential for the development of industries like steel, manufacturing, and transportation.
Additionally, the United States had a large and growing population, which provided a vast workforce for the industries. The influx of immigrants during the late 19th and early 20th centuries further contributed to the availability of labor.
The combination of natural resources and a large workforce allowed the United States to rapidly industrialize and become a leading global industrial power by 1900. Industries like steel production, railroads, and manufacturing boomed, fueling economic growth and transforming the country into an industrial powerhouse.
Overall, the United States of America emerged as a powerful industrial nation in 1900 due to its abundant natural resources and large workforce, which facilitated rapid industrialization and economic growth.