He challenged the 'established order'. [=the way things are usually done in society, in an organization, etc.]
Research has 'established' [='demonstrated, shown'] that he played an important role in the negotiations.
Investigators are trying to 'establish' if/whether anyone knew about these problems before the accident.
(..) Recite the Constitution's preamble. Know what a preamble is? "We the people of the United States, "in order to form a more perfect union, "establish justice, "ensure domestic tranquility, "provide for the common defense, promote the general welfare..." How many county judges in Alabama? (..)2014 Selma