Os

Determiner

 momentos  de

Adposition

 plena  soberanía

Noun

 alternábanse  con

Adposition

 alianzas  estratéxicas

Adjective

  e

Coordinating conjunction

 submisión  aos

 imperios limítrofes.

Moments of full sovereignty alternated with strategic alliances and submission to bordering empires.

Moments of full sovereignty alternated with strategic alliances and submission to bordering empires.