Set Google Chrome spelling to US English

My Google Chrome on an MBP highlights US English words as spelling errors.

For instance, "Monetization" and "Organize" Are marked as errors, while "Monetisation" and "Organise" are not marked as such:

Which appears in my editing pane as:

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My language settings are:

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Any idea how to set Chrome to allow both US and UK spelling?


Go to macOS System Preferences > Keyboard > Text > Spelling, click Set Up, and in the popup menu, select U.S. English and drag it to the top of the list.

Mac Spelling Language Setup Screenshot

Also, see this question at apple.stackexchange.com.