By far, moving of goods across seas is going to be the most economical and is going to be the best for you if you have to move between two countries that are located quite far off. But you must consider the perils of sea transfer before you opt for it. There are all chances of the ship getting robbed by pirates or even the ship sinking to the bottom of the ocean with your goods and things aboard.
But the most popular and convenient way of moving goods across borders is the airways. Airplanes specially designed to carry cargo over long distances are used for the purpose. They have all the space there is vacant for the purpose of carrying your cargo around the world.
Even if you are going to another city in India, and it is quite far off, and you require a quick transfer, you can always think of air transport. It is going to be quick and efficient.