The word "Cossack" means a free and independent man. Cossacks were first mentioned in writing in 1492.
In the 16th century they united in a single military organization.
The first fortifications were built on Mala Khortysia Island,in the lower reaches of Dnieper, beyond the rapids.
The word "sich" comes from Ukrainian "sikty", meaning "to chop of" - cut,
because the Cossacks cut trees to make their fortification of wood.
Fighting for the independence of the native land was the main idea of the Cossack Sich.
The Ukranian Cossacks played an important role in European political history.
In 1621 a Cossack host led in an alliance with Poland,
defeated the Turko-Tatar army and stopped the Ottoman Empire's onslaught in Europe.