Complex sentence: At peace talks to the C mandates of the League of Nations Haber was appointed later in May 1919 as a second member of the German delegation, it resigned it again because of the hopelessness of his work and took over the coal Management Institute in Mecklenburg.
Split into simpler sentences: At peace talks to the C mandates of the League of Nations, Haber was appointed later in May 1919 as a second member of the German delegation. He resigned because of the hopelessness of his work and took over the coal Management Institute in Mecklenburg.