Final answer:
Dr. Martin Luther King Jr. received his doctorate in Systematic Theology from Boston University in 1955, after completing his undergraduate and divinity studies.
Step-by-step explanation:
Dr. Martin Luther King Jr., the influential civil rights leader, received his doctorate in Systematic Theology from Boston University in 1955. His doctoral studies followed the completion of a Bachelor of Arts degree in Sociology from Morehouse College and a Bachelor of Divinity from Crozer Theological Seminary. King's intellectual contributions and activism left an indelible mark on American society, particularly recognized through his iconic "I Have a Dream" speech, which he delivered during the March on Washington for Jobs and Freedom in 1963.