As America marks its 250th anniversary, ABC News explores the people, moments, and ideas that shaped the nation and continue to influence its future. From the American Dream and the contributions of immigrants to the fight for civil rights, groundbreaking innovations, aviation, the moon landing, the birth of the internet, and the natural and historic landmarks that define the country, this special edition brings together the stories that have defined America for 250 years.
Watch more episodes of What You Need to Know streaming on @disneyplus : https://www.disneyplus.com/browse/entity-c99a2244-2ec4-449a-9dde-8b09a408f923