In the modern world, trade is mostly conducted by ship or airplane. This has made it much faster and easier to transport goods around the world, and has also reduced the cost of transportation. As a result, trade has become much more globalized, with goods being produced in one country and consumed in another. This has led to a greater interdependence between countries, and has helped to spread ideas and cultures around the world.
Here are some of the specific ways in which travel routes have changed over time:
* The use of sea routes has increased dramatically. In ancient times, most trade was conducted overland, but today, over 90% of trade is conducted by sea. This is because sea routes are much faster and cheaper than land routes.
* The use of air routes has also increased dramatically. In the early 20th century, air travel was a rarity, but today, over 2 billion people travel by air each year. This is because air travel is much faster than sea or land travel.
* The development of new technologies has made travel much more efficient. For example, the development of the internal combustion engine has made it possible to travel by car or truck, and the development of the jet engine has made it possible to travel by airplane.
* The globalization of trade has led to a greater variety of goods being available in different countries. For example, it is now possible to buy food from all over the world in most supermarkets.
In conclusion, the travel routes of today are very different from those of the classical civilizations. This is due to a number of factors, including the development of new technologies, the globalization of trade, and the increased use of sea and air routes.