What advances have been developed over the past five decades that address mental health care in the United States?

Please do not use a cover sheet in the 4-page count, I just need written material.
Here is the subject topic and research questions:
Brief Descriiption of Project/Research Topic: Mental Health in America has changed significantly over the last five decades. However, how it’s managed, and its outcomes metrics have not quite kept up with that change. I will present a historical perspective of this health care problem covering the last five decades to today and offer suggestions on its improvement for the future.
Research Questions:
The study seeks to address the following research questions: What advances have been developed over the past five decades that address mental health care in the United States? What problem solving approaches have healthcare system and administrations implemented moving forward for future improvements to mental health.
My classmate referred me to you as a writer, she is also using you for her project.
I have attached a copy of the template and template example to reference paper set-up.
Please let me know if any additional information is needed for clarity.