Complex sentence: In September 1860 AC Gregory had recommended to the Queensland Government that the border, which passed through the Plains of Promise, be moved to 138 East ° to provide the district with access to a port in the Gulf.
Split into simpler sentences: In September 1860 AC Gregory had recommended to the Queensland government that the border, which passed through the Plains of Promise, be moved to 138? East to provide the district with access to a port in the Gulf.