Why did colonist from Pennsylvania increase their interactions with Indians in the mid-1700s

What is the name for the main idea behind the settling of western lands by americans in the early-1800s?

Which statement best describes the response by the united states and its allies to the berlin blockade? planes dropped tons of supplies around the city each day. trucks smuggled tons of supplies into berlin about once a week. tons of supplies were delivered to west berlin by boats. tons of supplies were purchased from east berlin each day.

The louisianna purchase was controversil because