How formal organizations evolved

I am looking for some details for the following questions can you please assist me: 1. How has formal organizations evolved over the past century. What differences were there then compared to today. What are the current trends in formal organizations. 2. Describe how the characteristics of activities, hierarchy, norms, membership criteria, communications and focus will have to change for organizations to become more open and flexible. 3. Cite 3-5 sources 4. How will formal bureaucratic organizations likely to evolve in the future?