What are 3 methods of shipping?

There are three primary methods of shipping: ground, air, and maritime. Ground shipping is the most common, and typically the cheapest, method of shipping. It uses trucks and trains to transport goods over land. Air shipping is faster than ground shipping, but it is also more expensive. It uses airplanes to transport goods. Maritime shipping is the slowest form of shipping, but it is also the most affordable. It uses boats to transport goods.