Complex sentence: The conflict sparked a nationwide debate and much news media coverage, and on August 23rd, 87 tribal governments wrote resolutions, proclamations and letters of support stating their solidarity with Standing Rock and the Sioux people.
Split into simpler sentences: The conflict sparked a nationwide debate and much news media coverage. On August 23rd, 87 tribal governments wrote resolutions, proclamations and letters of support stating their solidarity with Standing Rock and the Sioux people.