Original: T-Mobile International has a substantial presence in eleven European countries (Austria, Croatia, Czech Republic, Germany, Hungary, Macedonia, Montenegro, the Netherlands, Poland, Slovakia, and the United Kingdom) as well as in the United States.
Simplified: T-Mobile International has a large presence in eleven European countries: Austria, Croatia, Czech Republic, Germany, Hungary, Macedonia, Montenegro, the Netherlands, Poland, Slovakia and the United Kingdom as well as in the United States.