By definition the difference between a confederation and a federation is that the membership of the member states in a confederation is voluntary, while the membership in a federation is not. Sometimes confederation is erroneously used in the place of federation. Hope this helps,
Answer:
D
Explanation:
The seed drill allowed more accurate planting (in lines) and led to further advancement and innovation. It allowed quicker production of crops, over larger pieces of land, but required less laborers.
