180) George Stephenson is regarded as ′the father of the railway locomotive′, because he made great improvements on Trevithick′s locomotive in his _____ in 1814.

181) In 1807, _____ invented the steamboat called the ′Clermont′.

182) _____ invented the first steam engine in 1705, in order to pump water out of the mines.

183) In 1769, _____ invented a better steam engine called the ′Beelzebub.′

184) Who invented a Seed Drill that would distribute the seeds evenly in rows, over a large piece of land?