Original:  During this period, the Chilean intellectual and politician Benjamn Vicua Mackenna (who served as senator in the National Congress from 1876 to 1885) was an influential voice in favor of Chilean expansionism into the Pacifiche considered that Spain's discoveries in the Pacific had been stolen by the British, and envisioned that Chile's duty was to create an empire in the Pacific that would reach Asia .
Revised:  During this period, the Chilean intellectual and politician Benjamn Vicua Mackenna (who served as senator in the National Congress from 1876 to 1885) was an influential voice in favor of Chilean expansionism into the Pacifiche considered that Spanish discoveries in the Pacific had been stolen by the British, and envisioned that Chile's duty was to create an empire in the Pacific that would reach Asia .
Edit intent: clarity