Challenges:

Flatten the [arrays]:

See the Pen Flatten arrays by Justin Sawyer (@JustinSawyer) on CodePen.

Add [arrays] "city, "westminster", "kensington" and "hammersmith" to the end of the sub array inside [array] "eng" and log the result in the console:

See the Pen Add arrays to index point in array by Justin Sawyer (@JustinSawyer) on CodePen.