Original The Thousand Cities - U.S and Canada after 99% of the population disappears

On January 1st, 2025, 99% of humanity disappears randomly with no explanation. The surviving 1% live in an incredibly underpopulated world, equivalent to pre-vanishing Germany. They have plenty of food, water, and resources, but all government authority has collapsed. This is what happens next, how humanity rebuilds. (In the U.S and Canada)