Eli Wizevich

After peaceful attempts at alliance-building stalled, the Continental Army launched an ill-fated invasion of Quebec in June 1775.

On the first Monday in March, Pulaski Day festivities at Chicago’s Polish Museum of America honored the “Father of American Cavalry,” 280 years after his birth.

In the 1930s, disillusioned farmers and ranchers fought to carve a 49th state out of northern Wyoming, southeastern Montana and western South Dakota.

Caught between steel mills, suburbs and a hard place, the 15,000-acre site is a fantasia of biodiversity—and a case study for hard-fought conservation.

During the 1984 campaign, the 73-year-old president meandered his way through his face-off against Walter Mondale, prompting questions about his mental acuity.

A century ago, the party took a record 103 ballots and 16 days of intense, violent debate to choose a presidential nominee.