Simplify the following text for a Grade 7 native English-speaking person.
Original: In May 2007 Banco Santander Central Hispano announced that in conjunction with Royal Bank of Scotland and Fortis it would make an offer for ABN AMRO .
Simplified: In May 2007 Banco Santander Central Hispano announced that it would make an offer to purchase ABN AMRO . This offer was in conjunction with Royal Bank of Scotland and Fortis .