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Rapid growth of the workforce ==> Creation of government programs to reduce unemployment

Explanation:

During the 19th century, economic growth was very low.

To increase the economic growth of the country the government made many new programs such as building roads and railways etc to support the mode of transport and to reduce unemployment.

The government also promoted many business for increasing the economy, this indirectly increased the workforce to run the company.

The rise of the national labor unions program united the labors of the company.  

answer; i do believe its (wife); good luck

the graph shows the spread of railways in the 1800s.

based on the graph, the conclusion that can be drawn about germany is answer d)   by 1880, germany had more rail lines than great britain and russia.