What is a theme in chapter 1 from the book harriet tubman

Instability and chaos:

Clinton discusses in this chapter Harriet Tubman's early life. As a child born into slavery, Tubman's life was always unstable. Her family could be broken up at any time and slaves were at the whim of their masters. Tubman's history shows how the death of a master or a parent giving a slave to a child was disruptive to slave life. Slaves moved with their masters and slave children were treated as commodities. Clinton's descriptions of slave life illustrate the theme of oppression throughout the work.