What are the historical foundations of the National Labor Relations Act (NLRA)?

Primary Task Response:write 400–600 words that respond to the following questions with your thoughts, ideas, and comments.

• What are the historical foundations of the National Labor Relations Act (NLRA)?
• What is the role of the National Labor Relations Board (NLRB)?
• Under the National Labor Relations Act (NLRA), provide a real world example of how the act guides the activities of unions and employers. 
• How would someone go about filing a claim with the National Labor Relations Board?