Simplify the following text for a Grade 11 native English-speaking person.
Original: As part of their preparations for the 2007 finals of the European Championship tournament , the England Under-21s played Slovakia national under-21 football team in a friendly match at the ground in June 2007 .
Simplified: As part of their preparations for the 2007 finals of the European Championship tournament , the England Under-21s played Slovakia in a friendly match at the ground in June 2007 .