Industrial Revolution sectors of the economy. However, per-capita food supply in Europe was stagnant or declining and did not improve in some parts of Europe until the late 18th century. Industrial technologies that affected farming included the seed drill, the Dutch plough, which contained iron parts, and the threshing machine. Jethro Tull invented an improved seed drill in 1701. It was a mechanical seeder which distributed seeds evenly across a plot of land and planted them at the correct depth. This was important because the yield of seeds harvested to seeds planted at that time was around four or five. Tull's seed
I Invented Sex just the thing to boost the already-substantial sales of Songz' third album." In the song's remix, Songz makes references to Tiger Woods, as he also refers to "going in like a Lil Wayne-Drake song." "DJBooth" said that Songz sings alongside, "Usher, who basically invented the modern sexual r&b blueprint that Songz is following, and Hilson, who more than holds her own alongside the boys with some scintillating vocals and hilarious 'soldier at attention' sexual entendres." The review goes on to state, "These three may not have invented sex, but they sure make listening to music while having sex more enjoyable."