Massive subterranean mantle plume could tear East Africa off from rest of the continent

The video discusses how moving lava to the Earth's surface could eventually lead to Africa's disintegration, as suggested by a study in Nature Geoscience. It explains that while volcanoes are often linked to tectonic plate boundaries, mantle plumes can also form volcanoes. A new study reveals a subterranean tree extending from East Africa to Reunion, which may have influenced continental shifts over millions of years. This plume could potentially cause East Africa to split from the continent and trigger catastrophic eruptions in South Africa.

Describe the interaction between tectonic plates and mantle plumes as mentioned in the text.

What evidence does the study provide regarding the movement of landmasses over millions of years?