To declare boundaries between the thirteen colonies and the Appalachian Mountains, so American colonists couldn’t create tension with the French and Native Americans who live across the mountains.
The United States bolstered the Afghan resistance warriors after the USSR's 1979 attack on Afghanistan. Their ill-conceived intrusion transformed into a setback-filled and money related failure as the Afghans battled dauntlessly - and with American hello there-tech weapons, for example, Stinger rockets, at last, drove the Soviets from their nation.