intertwine

US /ˌɪn.t̬ɚˈtwaɪn/
UK /ˌɪn.t̬ɚˈtwaɪn/
1.

絡み合う

to twist or be twisted together, or to be connected so as to be difficult to separate:

:
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The town's prosperity is inextricably intertwined with the fortunes of the factory.