Over the next few years , Stanley overpowered .
Over the next few years , Stanley made treaties with over 450 native tribes , acquiring him over 2,340,000 square kilometres ( 905,000 sq mi ) of land , nearly 67 times the size of Belgium .
Over the next few years , Stanley overpowered and made treaties with over 450 native tribes , acquiring him over 2,340,000 square kilometres ( 905,000 sq mi ) of land , nearly 67 times the size of Belgium .