During the early years of European settlement on a continent that was viewed as "wilderness" by the newcomers, Native Americans, intimately knowing the ecology of the land, were a help in the rescuing of many Pilgrims and pioneers from hardship, or even death.

• ANative Americans, intimately knowing the ecology of the land, were a help in the rescuing of  
• BNative Americans knew the ecology and the land intimately and this enabled them to help in the rescue of  
• CNative Americans, with their intimate knowledge of the ecology of the land, helped to rescue  
• Dhaving intimate knowledge of the ecology of the land. Native Americans helped the rescue of  
• Eknowing intimately the ecology of the land, Native Americans helped to rescue