Simplify the following text for a Grade 7 native English-speaking person.
Original: On 20 June 2010 , after two rounds of elections , Juan Manuel Santos CalderÃ n was officially elected as President of Colombia and was inaugurated on August the 7th , 2010 in the midst of a diplomatic crisis with Venezuela , which was quickly resolved .
Simplified: Juan Manuel Santos was elected president of Colombia on June 20 , 2010 .