Joseph Smith made a false prophesy about the United States
History of the Church, vol. 5, p. 394
"President Smith, in concluding his remarks, said that if the government, which received into its coffers the money of citizens for its public lands, while its officials are rolling in the luxury at the expense of its public treasury, cannot protect such citizens in their lives and property, it is an old granny anyhow; and I prophesy in the name of the Lord God of Israel, unless the United States redress the wrongs committed upon the Saints in the state of Missouri and punish the crimes committed by her officers that in a few years the government will be utterly overthrown and wasted, and there will not be so much as a potsherd left, for their wickedness in permitting the murder of men, women and children, and the wholesale plunger and extermination of thousands of her citizens to go unpunished, thereby perpetrated a foul and corroding blot upon the fair name of this great republic, the very thought of which would have caused the high-minded and patriotic framers of the Constitution of the United States to hide their faces with shame. Judge, you will aspire to the presidency of the United States; and if ever you turn your hand against me or the Latter-day Saints, you will feel the weight of the hand of Almighty upon you; and you will live to see and know that I have testified the truth to you; for the conversation of this day will stick to you through life."
The United States never apologized for anything to the Mormon Church. The United States in government was not overthrown. Joseph Smith made a false prophecy. However, some of Mormons teach that the Civil War was the fulfillment of this prophecy. It was not because the United States government was not utterly overthrown and wasted. In fact, it is still here. Joseph Smith was a false prophet.
What does the Bible say?
21And you may say in your heart, How shall we know the word which the Lord has not spoken? 22When a prophet speaks in the name of the Lord, if the thing does not come about or come true, that is the thing which the Lord has not spoken. The prophet has spoken it presumptuously; you shall not be afraid of him." (Deut. 18:20-22, NASB)