Complex sentence: In 1930, during his first term, he signed the Anglo-Iraqi Treaty, which, as a step toward greater independence, granted Britain the unlimited right to station its armed forces in and transit military units through Iraq.
Split into simpler sentences: In 1930, during his first term, he signed the Anglo-Iraqi Treaty. In the name of progress toward independence, the treaty gave the British the unlimited right to station its armed forces in and transit military units through Iraq.