Wegener first began to think about his continental drift hypothesis when he noticed a similarity in on different continents.

Coastlines

Explanation:

When we look at the continents as they currently exist in the world, we might notice that some coastlines that are on opposite ends of an ocean match each other. This observation is what led Wegener to first began to think about  the idea of continental drift. Continental drift refers to the slow movement of the continents on the surface of the Earth over time. This phenomenon is responsible for the current position of our continents.

because the center-south is called the heart of the country

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.