Complex sentence: It was a part of the French Mandate of Lebanon until 1923 when it incorporated into the British Mandate in Palestine in the first half of the 20th century, Abil al-Qamh had a triangular outline that conformed to the hill on which it was built.
Split into simpler sentences: It was a part of the French Mandate of Lebanon until 1923 when it was incorporated into the British Mandate in Palestine. In the first half of the 20th century, Abil al-Qamh had a triangular outline that conformed to the hill on which it was built.