It would be "the government" that manages the economy and determines production in a planned economy, since it is the government that "plans" what goods and services should be available and how many to produce.
1. Cyrus McCormick 2. Sewing Machine 3. Samuel Morse 4. Eli Whitney 5. Cotton Spindle 6. Cotton gin 7. Charles Goodyear 8. John Deere 9. Francis Lowell