Useimmiten valtiontuet ovat kuitenkin olleet keino suojella heikkoja alueita, epäedullisessa asemassa olevia ammattiryhmiä ja elintärkeitä julkisia palveluja tai keino suojata yhteiskuntaa suurien talouskriisien vaikutuksilta.

Translate to English

English:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
More often, however, state aid has been a means of protecting weak regions, disadvantaged professional groups and vital public services, or of protecting society against the effects of major economic crises.