as; with; due to; along with
Indicates that one change or event happens in parallel with another, often implying a cause-and-effect or proportional relationship. Used in formal and written contexts.
As I get older, my physical strength has declined.
Along with economic growth, environmental problems are also becoming more serious.
に伴って and に従って both describe a change happening as another change occurs, but に伴って emphasizes a stronger, often inevitable or large-scale accompanying relationship, while に従って is more neutral and works well for gradual or proportional change.
に伴って describes one event or change accompanying another (not always gradual), while に連れ specifically emphasizes proportional, step-by-step change.
Formed from the particle に and the て-form of the verb 伴う (ともなう, 'to accompany'). Literally 'accompanying', it grammaticalized into a conjunction meaning 'as' or 'along with'.