By 1890, American Indian resistance in the western United States had been crushed and settlers and railways had closed the frontier. In this environment of despair, the apocalyptic Ghost Dance religion spread quickly among Indian communities from California to Oklahoma, alarming white authorities. When, in December, 500 US Cavalry intercepted a group of 350 Lakota, mostly Ghost Dance practitioners, in South Dakota, tensions quickly led to a one-sided battle at Wounded Knee. This massacre was the last major conflict of the Indian Wars.
In March 1885, the Colombian government moved troops stationed in Panama to deal with rebels in Cartagena, only to have Panama erupt into revolt. To protect its interests, the United States sent ships to Panama City and Colón in early April, occupying both towns around 27 April. In response to this intervention, Chile sent the modern protected cruiser Esmeralda to Panama, where it arrived on 28 April. Alarmed by Chilean actions—it was estimated that the Esmeralda could easily defeat the local US naval forces—but considering the revolt suppressed, the US withdrew from the isthmus two days later.
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On 26 January 1887, the Venezuelan government demanded that Britain withdraw its settlers from the disputed region between British Guiana and Venezuela. Following the British government’s failure to accept this demand, Venezuela broke diplomatic relations in February 1887. Proposals to restore relations and resolve the dispute would fail repeatedly, turning the issue into a crisis between the two countries.
in wikipedia