Complex sentence: The generation is most commonly defined with birth years starting in the mid- 1990s, although the early or late 1990s and early 2000s have also been used as starting birth years for this generation.
Split into simpler sentences: The generation is most commonly defined with birth years starting in the mid- 1990s,. Mark McCrindle although the early or late 1990s and early 2000s have also been used as starting birth years for this generation.