Sentence:  More importantly , several of the more advanced of the less developed countries have <WSD>found</WSD> through experience that they must plan their own complex investment programs for at least 5 years forward and tentatively for considerably more than that if they are to be sure that the various interdependent activities involved are all to take place in the proper sequence . 
Meaning of the word marked with <WSD> tags:  make a discovery, make a new finding