The custom of predicting the weather using an animal drew on older beliefs brought to North America by German-speaking immigrants, whose tradition stated that clear weather on that date suggested a prolonged winter while overcast conditions indicated an early spring.
By the time the Continental Army left Valley Forge in June 1778 it was smaller in number but stronger in organisation and confidence, establishing the foundations of its eventual success against British forces.
Germantown was founded in the Pennsylvania Colony by immigrant Quaker and Mennonite families.
Dozens were killed or injured when Pinkerton agents working on behalf of the Carnegie Steel Company fought striking steelworkers in Homestead, Pennsylvania.
Approximately 23,000 Union soldiers and 28,000 Confederates were killed, wounded, or captured in just three days.
The incident at Three Mile Island heralded a dramatic shift in public attitudes towards nuclear power and the second reactor never returned to service.
ENIAC was soon put to use running calculations to help build a hydrogen bomb, and continued to operate until 1955.
The Continental Congress convened for an official session in Lancaster’s County Courthouse, marking the one and only day the city held the title of the capital of the United States.
More than 1,100 people worked at the Arsenal, 78 of whom died while many more were injured.More than 1,100 people worked at the Arsenal, 78 of whom died while many more were injured.
Opening with the famous line ‘Four score and seven years ago,’ Lincoln made the 2-minute speech to an assembled crowd of approximately 15,000 people including six separate state governors.
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