It’s an ad, pushed by the browser in response to an automated (and rather complex) ad auctioning process that occurs in the background.
In this instance the ad appears on your browser’s ‘home’ page. This is the browser’s default setting, as it allows the browser publisher (Microsoft) to sell all that screen real estate. Other than providing the space, the page owner - whether you are on your ‘home’ page or anywhere else on the Internet - has very little say in what ads appear. They can say, for instance, “nothing that refers to Nazis” - but largely the ads are driven by what you as a user are known to be interested in.
Since you have already clicked on that ad once, the advertiser sees you as a likely prospect (it does not recognise that you are a converted prospect), and so you will probably see that ad quite a bit.
This brings me to a note for the future: posting that kind of screenshot can be somewhat revealing. Apart from telling us where you are, it can also indicate your personal preferences through the ads and news articles (and news sources) that appear - and shows any pages you have on your bookmarks bar. You can change your home page through the browser’s settings.
