After an agreement with Great Britain, Nauru was annexed by Germany in 1888 and incorporated into Germany's Marshall Islands Protectorate for administrative purposes. The arrival of the Germans ended the civil war, and kings were established as rulers of the island. The most widely known of these was King Auweyida. Christian missionaries from the Gilbert Islands arrived in 1888. The German settlers called the island "Nawodo" or "Onawero". The Germans ruled Nauru for almost three decades. Robert Rasch, a German trader who married a Nauruan woman, was the first administrator, appointed in 1890.