につれて

につれて is used to show that one change leads to or accompanies another change. The first element (noun or verb) marks the changing condition, and the second clause describes what happens as a result. It emphasizes a passage of time, progression, or parallel movement/s change. Commonly used with verbs in dictionary form or with nouns, and can apply to adjectives when expressing a change in degree or state. Note: more formal or literary than everyday casual speech, and it often implies a natural progression rather than a deliberate action.