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“Disney was the most consequential figure in the history of American culture,” historian and author Garry Apgar said.

“Disneyland was built when the interstate highway system was just getting started, and California was building the freeways,” Apgar said, noting that American families began taking road trips — a luxury that previous generations could not afford.

Disney pioneered sound film technology, synchronizing on-screen action with recorded speech, music and sound effects, Apgar said.

The Apgar score, determined by a series of quick assessments immediately after birth, traditionally includes checking whether the baby is "pink all over".

First, it considers the Apgar score, devised in the 1950s.