No, in the western, in South America.
None. The Atlantic Ocean is on Uruguay's south-eastern border.
English : Eastern Republic of Uruguay Spanish : República Oriental del Uruguay
Western, it's in South America.
Uruguay is located in the southern eastern region of south America
Northern
It's spelt hemisphere. An arbitrary line drawn through London splits the globe into two halves, everything west of here falls into the Western hemisphere (Americas), everything east into the Eastern hemisphere (Asia etc). Some countries fall into both (in Europe and Africa).
A British Lord worked as intermediate between Argentina and Brazil to fix the dispute over the territory where now Uruguay is. The result of this treaty was the creation of a new country at the east of the Uruguay River (that's why Uruguay full name is "República Oriental del Uruguay", what means Eastern Republic of Uruguay). This Lord was named John Ponsonby.
The northern hemisphere
The Southern Hemisphere
Madagascar is in the southern hemisphere.
The Southern Hemisphere.
southern