jan 16, 1600 BC - Proto Indo-European Language
Description:
It is believed that PIE had a pitch accent system. All words had only one accented syllable which received a high pitch. Stress could fall on any syllable of a word. PIE vocabulary referring to many common elements of their culture. This basic vocabulary is not uniformly attested across all Indo-European languages which suggests that some words may have developed later or were borrowed from other languages
Added to timeline:
Before English
Date: