Answer:
By air and train
Step-by-step explanation:
When you ship merchandise nationwide you can do it by terrestrial or by air transportation. The fastest way to reach a destination is by air (in case you are not near a central distribution hub) and then putting your products inside a train. Nowadays trains are very safe, very cost effective and reach lots of places accross the country in a very short time. Also, id your merchandise is perishable (like fish) you can use special type of train wagon that will keep it to a specific temperature so that when it arrives to its destination, the product will keep its freshness and ready.