During its first years the academy operated during the period of political instability and economical ruin (Ukrainian–Soviet War, Russian Civil War, Polish–Soviet War). The leadership of the Ukrainian Academy of Sciences sought its recognition by each new power and principally emphasizing on non-political background of the main science center. Despite the financial hardship, famine, arrests, and emigration of some of its members, the UAS has not only survived as an institution, but developed its structure and directions of research, began to prepare for publication its scientific works.