Nineteenth-century attempts to spread the English language through its exclusive use in schools at the expense of the Welsh language, following the 1847 Reports of the Commissioners of Inquiry into the State of Education in Wales (commonly known as the "Treachery of the Blue Books" in Wales), led to an increase in .
The 19th-century efforts to promote English language education at the expense of Welsh, following the 1847 Reports of the Commissioners of Inquiry into the State of Education in Wales (commonly known as "Treachery of the Blue Books" in Wales), resulted in a rise in...