Simplify the following text for a Grade 8 native English-speaking person.
Original: Since their fellow Canadian franchise , the Montreal Expos , relocated to Washington , D.C. after the 2004 season ( becoming the Washington Nationals ) , the Blue Jays are currently the only MLB team outside the United States .
Simplified: When the Montreal Expos moved to Washington , D.C. becoming the Washington Nationals , the Blue Jays became the only MLB team located outside of the United States .