(sentence), given (something)
The phrase "___, given ___" is pretty complicated! It's used to introduce an idea that provides a reason for part of your sentence:
Here's an example:
It's surprisingly fast, given how big it is.
In this example, "given how big it is" explains why it's surprising for it to be fast.
And here's another example:
We probably shouldn't invite both of them at the same time, given their romantic history.