why are there no earthquakes on the country/ies you mentioned

There are typically no earthquakes in a country if it is located away from tectonic plate boundaries where seismic activity is concentrated. Earthquakes happen mainly along fault lines at the edges of tectonic plates where plates move, collide, or slide past each other, releasing accumulated stress. Countries situated in the central part of tectonic plates or on stable continental interiors tend to experience very few or no noticeable earthquakes because they are far from these active fault zones. Some examples include large parts of continental interiors like central Russia, Africa, and Australia which are far from plate boundaries and thus have very low seismic risk. Even though minor earthquakes can occasionally occur anywhere due to intraplate stresses, such occurrences are rare and usually weak. Therefore, the absence of earthquakes in some countries can be explained mainly by their geological positioning away from active plate margins and fault zones.