The workers of England, who were becoming more aware of politics, started requesting higher pay and better conditions. To request these things, they created their own unions so that they could all unite and strike until their requests were fulfilled.
Jethro Tull's seed drill sowed the seeds in straight rows and then covered them up. This greatly advanced agriculture because, before people would just scatter the seeds and hope they grew. Jethro Tull is also the name of a really bad flute-rock band. o.O