Based on the examples of historical and contemporary influences on the macro practice of social work that you studied in your readings for this unit, reflect on the most recent human services challenges that have emerged in U.S. society, or those that might emerge within the next 10–20 years or so. Provide at least two examples that are not mentioned in the reading materials for the unit and explain how interorganizational collaboration among various sectors might help combat these challenges. Think in terms of who should be involved and how the collaborative effort of these organizations might make a difference.