Τεῦκρος: see E. 17, 18.
Εὐαγόρας: see E. passim, and for the termination of the Phoenician occupation of Salamis ib. 19, 20, and 27-33.
τοσοῦτον μετέστησεν ὥστε, ‘caused such a change of affairs that ...’ On μετά in composition see note on E. 50 μεταπεπτώκασιν.
ὧνπερ ἦν τὴν ἀρχήν: τούτους is the antecedent, ‘those who originally possessed it.’ Cp. Andoc. de Pace 20 ἐξῆν γὰρ αὐτοῖς καὶ τὴν ἀρχὴν ἐῶσιν Ὀρχομενίους αὐτονόμους εἰρήνην ἄγειν. τὴν ἀρχήν is an adverbial accusative; contrast the sense of ἀρχή, ‘beginning,’ with ἀρχή, ‘rule’ (τὴν ἀρχήν above).