Final answer:
The Arabian Peninsula serves as a land bridge between Africa and Asia, with the Suez Canal connecting the Mediterranean and Red Seas.
Step-by-step explanation:
The peninsula that has served as a land bridge between Africa and Asia is the Arabian Peninsula. This distinctive landform in southwest Asia is the world's largest peninsula, bordered by the Red Sea to the west, separating it from Africa, and by the Persian Gulf to the northeast, distinguishing it from the Asian mainland.
The creation of the Suez Canal further defined the separation between Africa and Asia by providing a sea-level waterway connecting the Mediterranean Sea and the Red Sea.
The canal is a critical maritime route that allows transportation between Europe and the countries around the Indian and western Pacific oceans, bypassing the need to navigate around the bulk of the African continent.