Final answer:
The need for apprenticeship training was recognized in the 1910s, in response to the industrial economy's demand for technical and trade skills, supported by educational reforms and labor legislation in the 1930s and 1940s.
Step-by-step explanation:
The need for apprenticeship training was recognized in the 1910s. During this time, the number of public high schools increased significantly, and with the rise of industrialization, there was an increasing awareness of the value of technical and trade skills in the new economy. The early 1900s saw reforms to eradicate the harsh conditions of child labor and put a focus on at least obtaining a primary school education. Vocational education began to grow with courses in agriculture, mechanics, and industrial trades, catering to the evolving needs of an industrializing nation. Additionally, the National Labor Relations Act of 1935 and government support for unions in the early 1940s indicate recognition of the importance of skilled labor in the workforce.