I wanna say D.
Sorry if I’m wrong:(
It began when Galileo tried to use his tidal theory to prove the movement of the Earth around the Sun. Galileo theorized that because of the Earth's motion, borders of the oceans like the Atlantic and Pacific would show one high tide and one low tide per day.
Answer:
en español porfa no entiendo el ingles
South Africa is the most stable country south of the Sahara
Their are many humans around the globe with the same problems.