Wow, you weren't kidding. The Fed dropped the funds rate down to nearly zero by December 2008.[1] It took the European Central Bank until June 2014 to bring their interest rate down to the same level.[2] They even had a couple rate hikes in the interim.

[1] https://fred.stlouisfed.org/series/FEDFUNDS

[2] https://www.ecb.europa.eu/stats/policy_and_exchange_rates/ke...