Misc: How many holes are there in a standard horseshoe?

Questions

On This Day In January 1815 - U.S. General Andrew ______ achieved victory at the Battle of New Orleans. The War of 1812 had officially ended on December 24, 1814, with the signing of the Treaty of Ghent. The news of the signing had not reached British troops in time to prevent their attack on New Orleans.?

On This Day In January 1838 - Alfred ______ demonstrated a telegraph code he had devised using dots and dashes as letters. The code was the predecessor to Samuel Morse's code.?

On This Day In January 1853 - A ______ statue of Andrew Jackson on a horse was unveiled in Lafayette Park in Washington, DC. The statue was the work of Clark Mills.?

On This Day In January 1856 - ______ (hydrated sodium borate) was discovered by Dr. John Veatch.?

On This Day In January 1877 - ______ Horse (Tashunca-uitco) and his warriors fought their final battle against the U.S. Cavalry in Montana.?