God you are tiresome little twit.
Trickledown Economics - give big enough tax breaks to the wealthy some of that revenue may eventually be used to invest in jobs that benefits to these tax breaks may eventually trickle down to the working class.
Infrastructure Investment.
https://books.google.com/books?hl=en&lr=&id=tOH0ra5QaoMC&oi=fnd&pg=PR9&dq=Ripple+effect+of+infrastructure+development&ots=x4hFfwuQzn&sig=N4I--uqck3JHLxrEwKrpRvJSZco#v=onepage&q=Ripple%20effect%20of%20infrastructure%20development&f=false