For example, UK's Ministry of Justice has 1/6th the financial resources of the US's Department of Justice.
One notable example of this is with child pornography prosecutions. Many countries do not have a dedicated child pornography specialist units capable of digital forensics and analysis where the US does. So various international ministries and departments of justice will team up with the US, feeding info back to Virginia and even permanently stationing personnel there to act as liaisons, during very complex child pornography investigations.
Additionally, many countries will threaten extradition to the US to gain plea deals.
Finally, you may have missed the final paragraph:
>The former finance officer of Terraform Labs, Hon Chang-joon, was extradited to South Korea in February, after serving four months in prison in Montenegro over fraud charges.
South Korean imperialism?