YEs, most in the US don’t have mercury. In the UK they still use the mercury.
In the same period in which the US stopped using it, the US autism instance went down, the UK’s did not. Might be coincedence, but that’s the data.
I'd love to see a cite on that particular 'fact'. If you don't have one, I'd say that you're making things up as you go along.
Here's a study that directly contradicts what you're saying:
>> In the same period in which the US stopped using it, the US autism instance went down, the UKs did not <<
Please cite a reliable, primary scientific source for this statement.