Massachusetts requires insurance to register a car: there’s like half a dozen itemized minimum coverages
It was a real hassle a couple decades ago when they combined license, registration, and insurance requirements, while also no longer sending reminders. A lapse in one meant the rest were dropped and made it that much harder to fix. For example drivers license expires every four years, but without a reminder, you may forget. But an expired license may discontinue your insurance, so now you’re driving without coverage for a month until that gets sent out. Now your registration may also be canceled because of lack of insurance, so you have to renew all three and in the right order