Original: On 1 February, 1946, he was elected as the first Secretary General of the United Nations as a result of a compromise between the major powers, having only missed being elected President of the first General Assembly by a small margin.
Simplified: On February 1, 1946, he was elected as the first United Nations Secretary-General as a result of a compromise between the major powers, having only missed being elected President of the first General Assembly by a small margin.