Final answer:
Between the fall of 1935 and the spring of 1936, Europe's shift towards authoritarianism and the threat from fascist policies led to the conditions that favored Ioannis Metaxas's selection as the interim Prime Minister of Greece.
Step-by-step explanation:
The period between the fall of 1935 and the spring of 1936 in Europe was marked by significant political changes and increasing authoritarian rule, which laid the groundwork for Ioannis Metaxas to be appointed as interim Prime Minister of Greece. The rise of fascism in Italy, Spain, and Germany during the 1930s led to disillusionment with democratic governance and a shift towards authoritarian leaders who could impose stronger control. Simultaneously, European states dealt with the threat of expansionist policies from leaders such as Adolf Hitler, which bolstered the justification for strong leadership within individual nations.