What did Jethro Tull invent?

• A. Seed drill
• B. Steel cast plow
• C. Steam engine
• D. Cotton gin

Answer: (A)

The main idea here is precision planting. Jethro Tull invented the seed drill to place seeds at a controlled depth and spacing in rows, rather than sowing them by hand or scattering them randomly. This ensured more seeds germinated, reduced waste, and made subsequent weeding and cultivation easier, which together boosted crop yields. Before this, farmers often wasted seeds and had uneven crop stands because seeds weren’t planted at the right depth or interval. The seed drill’s efficiency helped drive improvements during the Agricultural Revolution and supported larger populations. Other famous inventions—like the steam engine, the cotton gin, or a steel plow—were created by different inventors for different purposes, so they don’t reflect Tull’s contribution.