The accent used by Tom Hanks in ‘Forrest Gump’ was actually the real-life accent of the boy that played young Forrest.
Because babies listen to the languages spoken around them while still in the womb, they develop distinctive cries that reflect this when they’re born. Thus – babies cry with an accent, making it possible to distinguish a French baby from a German baby, based purely on the way they cry.
Americans didn’t lose their British accent, the British accent evolved; Brits used to sound more like Americans rather than vice versa.
While most media depicts Abraham Lincoln with a deep, booming voice and a Transatlantic accent, written accounts of his speeches show that most people were surprised to find out the president was actually a shrill tenor with a twangy Southern American accent.
Humans usually imitate the speech of someone with a strong accent due to empathy and to create a bond and assimilate with them.
There is a small island in the US state of Virginia. Its in inhabitants speak the same language as its settlers in 1686-some linguists consider it the closest surviving accent to Shakespearean English.