Answer: including:
Economic problems: Many empires faced economic difficulties that put pressure on their political systems, such as hyperinflation, recession, and high unemployment.
Political instability: Many empires experienced political instability due to the inability of their leaders to address key issues, corruption, and the lack of popular representation.
Nationalism: Nationalism was a significant force in the 20th century, leading to the rise of independence movements and the desire of various ethnic groups to form their own nation-states.
Military overextension: Some empires, such as the Soviet Union, overextended themselves militarily by engaging in costly conflicts or engaging in an arms race that drained their resources.
Social upheaval: Social movements such as feminism, civil rights, and labor movements challenged traditional hierarchies and caused significant social unrest.
Technological change: The introduction of new technologies disrupted traditional ways of life, leading to economic and social dislocation.
These factors and others contributed to the collapse of many empires in the 20th century, including the Ottoman Empire, British Empire, and Soviet Union.
Step-by-step explanation: