The phrase "have brought about changes" is correct and commonly used in written English.
It means to cause or initiate changes. Example: Over the past decade, advancements in technology have brought about changes in the way we communicate and work.
Format changes have brought about changes in style.
The steps I have taken that have brought about changes makes me believe that change can happen.
But his past actions, he said, have brought about changes like correcting state accounting practices and might again this time, spurring lawmakers to standardize gun-checking procedures.
The topic of immigration is at the center of contemporary politics and, from a scholarly perspective, existing studies have documented that attitudes towards immigration have brought about changes in both partisanship and voting behavior.
He has brought about changes at the fund, which has 185 countries as members, including allowing a greater voice for China and other emerging market countries.
Cedric the entertainer, co-star of "The Steve Harvey Show" on WB, acknowledged that the pervasivenes of black popular culture had brought about changes, but he still felt differences in performing before black and white audiences.
Bradley launched a consultation exercise on whether to launch part two of the Leveson inquiry in November, citing the costs involved and the fact that the first part had brought about changes in the industry as reasons for the review.
The socialization of the Web has brought about changes to how, when and where we communicate with each other over the Internet.
Mammographic screening is now used extensively with national programmes, which has brought about changes in practice and in the nature of the lesions identified.
