How did tectonic plates form the Congo Basin and the Great Rift Valley?

The Congo Basin was formed by the slow movement of tectonic plates which created a depression over millions of years. The Great Rift Valley was formed by the movement of two tectonic plates away from each other, causing the Earth's crust to stretch and create a long, deep valley. Both of these geological formations are a result of tectonic activity shaping the Earth's surface over time.