This event is part of Irangate as it was known by the media.
Oliver North's objective as a representative of some branches of the United States power (CIA) was to sell arms to Iran in order to finance the Nicaraguan Contras, which were right-wing paramilitary and anti-communist groups that aimed at fighting the FSNL (Frente Sandinista de Liberación Nacional) for power in Nicaragua, the FSNL was a communist guerrilla. The United States saw this as an intrusion into its adjacent geopolitical sphere from communism and in the context of the Cold War acted in a questionable way to avoid that event . The money generated by the sale of weapons was administered by Oliver North who provided these funds to the Contras.
the U.S. imposed and subsequently tightened a comprehensive set of restrictions and bans against the Cuban government, ostensibly in retaliation for the nationalization of U.S. corporations' property by Cuba.
The period after the war was characterized by economic depression and political crisis. The thirteen states at the time were ruled by a Confederation Government that was only unified by the Articles of Confederation. Each state remained sovereign and could govern its own way.