* Cotton
* Tobacco
* Sugar
* Coffee
* Rice
* Indigo
* Rubber
* Gold
* Silver
* Copper
* Iron
* Coal
* Lumber
* Livestock
* Manufactured goods
* Foodstuffs
* Clothing
* Household goods
Slaves were also used to provide other services, such as transportation, construction, and domestic labor.
If someone said that the greatest urban center built in the century XIX was in Southeast Asia, we could, at the very least, suspect that this was a mere spite of the growing European capitalist nations that were emerging in this period. To overcome this suspicion, the studies of the Royal British Ge
Representation of a bison in the Spanish cave of Altamira • ISTOCKPHOTO It was too incredible to be true:“The Altamira painters technique includes the following elements:linear perspective, aerial perspective, colors diluted in water or grease, brush. Could Paleolithic people have painted these
The first problem posed by the U-boat was its location; the second was its destruction. In 1917 the Allied Research Commission for the Detection of Submarines had worked seriously and for a long time to solve the first point, and towards the end of the war they created a device capable of detecting
About 42,000 years ago the magnetic poles of our planet reversed (north became south and vice versa), which - combined with a simultaneous decline in the activity of the Sun - had the consequence of causing serious environmental and climatic changes , catastrophic events for various species of large