Piracy--the attack of piracy was the attacking of ships and taking of the goods.
Pirate or privateers worked in crews with a hierarchy targeting merchant ships to attack and take the good on the ship. The goods would then be sold on the black market or traded for other more valuable items. Royal ships were especially targeted as they often contained gold and other luxury items.
The Eight Lords Proprietors
It was problematic because a large number of tribes supported Britain in the war so now that the Colonies were free it was up to them to have diplomatic relations with the natives that fought against them. The Natives weren't even invited so any territorial acquisition that occurred was done without them and they lived on those territories.
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To gain backing of Americans, both the Allies and Central
Powers used Propaganda intended to influence opinion. Governments
during the First World War keen massive capitals and huge quantities of effort
to creating material intended to shape opinion and action worldwide. The labors
of states to defend their actions, and to build global support, caused in some
of the most influential propaganda ever shaped.