In 18th century Europe, society was divided into estates and orders. This division was based on the social hierarchy and the privileges and rights associated with each group. Let's delve into this division in more detail:

1. Estates:
The concept of estates originated in medieval Europe and continued into the 18th century. It divided society into three broad categories known as estates:

a) First Estate: The First Estate consisted of the clergy, including bishops, priests, and monks. They held significant power and wealth and enjoyed various privileges, such as exemption from certain taxes.

b) Second Estate: The Second Estate comprised the nobility, including aristocrats, lords, and knights. They held political power, owned vast lands, and enjoyed privileges such as exemption from certain taxes and the right to hunt.

c) Third Estate: The Third Estate encompassed the majority of the population, including peasants, artisans, and the bourgeoisie (wealthy commoners). They were responsible for paying taxes and often faced economic hardships and limited political power.

2. Orders:
Within the estates, society was further divided into orders based on occupation and social status. The orders were as follows:

a) Nobility: The nobility occupied the highest social order and enjoyed privileges and titles. They held positions in government, military, and administration, and their status was often hereditary.

b) Clergy: The clergy constituted the second order and formed an influential part of society. They held positions within the Church and were responsible for religious affairs.

c) Commoners: The commoners formed the third order and included peasants, artisans, merchants, and professionals. They were responsible for the majority of the economic activities and were often subject to the authority of the nobility and clergy.

In conclusion, the society in 18th century Europe was divided into estates and orders. The estates division comprised the First Estate (clergy), Second Estate (nobility), and Third Estate (commoners). Within each estate, there were further divisions based on occupation and social status, known as orders. This social hierarchy determined the privileges, rights, and power held by different groups in society.