They signed trade agreements with foreign states and guaranteed their trade partners against any possible theft or other losses suffered during these journeys.

It was again the Seljuks who first established the State insurance System to safeguard commercial life and to stimulate trade by cuts in customs taxes.

Inns and Caravanserais built along the Silk Road shouldered Important tasks within this active medium.
Appearing as fortresses on remote roads, these edifices with their elaborate stone ornaments and accurate space designs also bore great importance from the architectural aspect.

Apart from meeting all requirements of travelers as a foundation, they also assured travel and trade safety, provided social solidarity for lodgers' a market for merchants to sell their merchandise, as well as bases facilitating the supply of food and ammunition for the army during its campaigns.

These Caravanserais were built at a distance of 30-40 kms from one another, to be covered in 8-10 hours on foot.

Regardless of their religion, language or race, travelers were accommodated and catered to for three days in these caravanserais, their animals were taken care of and fed, and the sick were cured, all at the expense of the foundation.

Today there are good examples of caravanserais in Anatolia; Agzikarahan in Cappadocia, Sultanhan in Aksaray, Öküz Pasa han in Kusadasi, Horozluhan in Konya etc.