The third battle at Vailele became the last significant engagement of the war, after, the Allies declared that so long as the Mataafans remain out of Apia, they would not take action against them.
The third battle at Vailele became the last significant engagement of the war. They would not take action against them. This is so long as the Mataafans remain out of Apia. This was what the Allies declared.