At the same time, assignment of region west of the Alleghenies as
an Indian reserve halts westward expansion and imperial government
takes over regulation of trade with the Indians. The line will
become known as the Proclamation Line and will become a sore point
for the north American colonists.
Citation:
Editors. "British colonial governments for Quebec, Florida and Grenada".
The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=12873, accessed 18 June 2013.]