Answer:
1. Log roads - "corduroy".
2. Would provide continuous waterways - canals.
3. Carried canal boats over mountains - Portage Railroad.
4. Used to raise and lower canal boats - locks.
5. Declares a law null and void - Doctrine of Nullification.
6. Supported Jackson - Democratic-Republicans.
Step-by-step explanation:
1. Corduroy roads are log roads that use timbers on tracks as a way to make commuting easy and more comfortable, especially over muddy and dirt roads.
2. Canals are one means of providing continuous waterways for the traders and businessmen.
3. Portage Railroad allows the transportation of canal boats over the mountains, thus providing an easier method to transport the boats.
4. Locks are devices that are used to raise and lower canal boats as and when required in an easier way. It also allows for the boats to move along different stretches of water and water levels.
5. The Doctrine of Nullification is a law that allows any state within the Union the right to nullify a law and declare it void.
6. The Democratic-Republicans was an American political party that supported Andrew Jackson for the 1824 presidential election.