Complex sentence: Through this agreement with Spain in 1956 and another in 1958, Moroccan control over certain Spanish-ruled areas was restored, though attempts to claim other Spanish possessions through military action were less successful.
Split into simpler sentences: Through this agreement with Spain in 1956 and another in 1958, Moroccan control over certain Spanish-ruled areas was restored. Attempts to claim other Spanish possessions through military action were less successful.