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COPPER
most goods must be transported by road to Lake Tanganyika then boats take them from there
most goods must be transported by road to Lake Tanganyika then boats take them from there
Aliens
Goods are transported on the Silk Road usaully by foot. Along the way people will use camels, horses, and yaks to get safely across.
Yes alkalis and acids can be transported by road.
By road, train, and sea. It's to expensive to travel by air unless in extremely small quantities.
Lots of expensive goods were made along the silk road, and with that they would make more money to more people. The silk road was full of different sellers from different places. That's how different materials were spread to different places.
Why is Sulphuric Acid transported in road tankers and not by train?
The cost of transport in ancient times was so great that only expensive ones were taken, the rest by sea.
The same reason they call goods that go by road a shipment and goods that go by ship a cargo.
They were expensive to bring back. The overland Silk Road was dangerous and long. It took moths to travel. Many times the travelers were robbed or ships were lost in storms. The cost of the goods was added to the price when they were sold.