START[T]›to start a company or organization that will continue for a long time: [often passive]The brewery was established in 1822.
establish sb/sth as sth›to put someone or something into a successful and lasting position: [often reflexive]He quickly established himself as a talented actor.
establish communication/relations, etc›to start having a relationship or communicating with another company, country, or organization: The two countries have only recently established diplomatic relations.
DECIDE[T]›to decide something: Our first step must be to establish priorities for the weeks ahead.
DISCOVER[T]›to find out information or prove something: [+ question word]The police are trying to establish how he died.