Final answer:
Option B, 'Decline of empires and colonial rule,' is the best descriptor of the similarities between 18th century America and 20th century Africa, with both experiencing European colonization followed by movements towards independence and self-governance.
Step-by-step explanation:
The content loaded Which of the following best describes the similarities between 18th century America and 20th century Africa? Among the choices provided option B) Decline of empires and colonial rule best describes the similarities between these two historical contexts.
During the 18th century, America experienced significant changes with the growth of European colonization which later led to the American Revolution and the end of British colonial rule. Similarly, the 19th and early 20th centuries in Africa were marked by European colonization which eventually gave way to movements of decolonization and independence throughout the continent in the mid-20th century. Both periods were characterized by the struggle against foreign control and the reassertion of self-governance.