What happened July 1898 AD

In July 1898, Curie and her husband published a joint paper announcing the existence of an element which they named "polonium", in honour of her native Poland.

In May 1898, Nadya joined him in exile, having been arrested in August 1896 for organising a strike. She was initially posted to Ufa, but persuaded the authorities to move her to Shushenskoye, claiming that she and Lenin were engaged; they married in a church on 10 July 1898.