The United States has a similar legacy, but has yet to apologize. One state has stepped up and issued a somewhat different sort of apology, though. In a non-binding resolution, the Colorado Legislature apologized in late April for the intentional deaths, "cruelty, and inhumanity" inflicted on Native peoples. According to an article in Indian Country Today, the resolution specifically mentions the forced removal of the Cherokee Nation in 1838 and the Sand Creek Massacre of 1864, when as many as 200 Native people--mostly elderly men, women and children--were killed by members of the Colorado militia.
That's one state that's acted, 49 to go, plus the federal government.