Weekly Crossword

3. The practice of planting different crops each season to keep soil fertile.
6. The movement of people from rural areas to cities.
8. A machine that allowed one worker to spin many threads at once.
10. A manufacturing process where products are built step-by-step by different workers.
12. Man made waterways used to transport goods and raw materials.

1. A powerful engine that pulls train cars on railroads.
2. A boat powered by steam engines instead of sails.
4. A machine that uses steam power to run factories and transportation.
5. An economic system where nations increase wealth by exporting more than they import.
7. A machine that quickly separates cotton fibers from seeds.
8. A farming machine that plants seeds evenly in the soil to increase crop yields.
9. A system of communication using dots and dashes sent over wires.
11. The practice of fencing off common land for private farming.