#OnThisDay, 28th May 1949, the Socialist Party of Ireland (SPI) was formed.
The SPI was associated with the Socialist Party of Great Britain (SPBG) and World Socialist Movement. It was later succeeded by the World Socialist Party.
https://www.leftarchive.ie/calendar/on-this-day/05/28/#event-4500
On This Day, 28th May
Irish Left Archive[>
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The 1949 SPI is not associated with the 1970s SPI or the current Socialist Party, which both come from discrete political traditions.