The earth's surface before seismic earthquakes, ocean currents, winds and drifts changed the land forms into different countries, was one land mass.
(ocean currents, winds and drifts; changed; the land forms; into different countries) (The earth's surface before seismic earthquakes; was; one land mass)
ocean currents, winds and drifts The earth's surface before seismic earthquakes
changed was
the land forms into different countries
one land mass