Complex sentence: The Birmingham Education League evolved into the National Education League, which held its first Conference in Birmingham in 1869 and proposed a school system funded by local rates and government grants, managed by local authorities subject to government inspection.
Split into simpler sentences: The Birmingham Education League evolved into the National Education League, which held its first Conference in Birmingham in 1869. The League proposed a school system funded by local rates and government grants, managed by local authorities subject to government inspection.