MELBOURNE, Australia — If the United States had the same Covid death rate as Australia, about 900,000 lives would have been saved. The Texas grandmother who made the perfect pumpkin pie might still be baking. The Red Sox-loving husband who ran marathons before Covid might still be cheering at Fenway Park.
For many Americans, imagining what might have been will be painful. But especially now, at the milestone of one million deaths in the United States, the nations that did a better job of…