Final answer:
The National Education Association (NEA) belongs to the realm of Social Studies. The NEA is the largest labor union and professional organization for educators in the United States.
Step-by-step explanation:
The National Education Association (NEA) belongs to the realm of Social Studies. The NEA is the largest labor union and professional organization for educators in the United States. It represents teachers and other education professionals in advocating for quality education, improved working conditions, and equitable policies in the field of education.