Sentence:  The present Federal program of vocational education began in 1917 with the passage of the Smith-Hughes Act , which provided a continuing annual appropriation of $ 7 million to support , on a matching <WSD>basis</WSD> , state administered programs of vocational education in agriculture , trades , industrial skills and home economics . 
Meaning of the word marked with <WSD> tags:  a relation that provides the foundation for something