Final answer:
The postwar world featured the formation of the United Nations, the rise of the Soviet Union as a world power, the independence of India and Pakistan, and significant social and economic transformations, but did not include a return of the Great Depression or declining birth rates due to war casualties in America.
Step-by-step explanation:
The features of the postwar world included the formation of the United Nations, the emergence of newly independent countries such as India and Pakistan, the ascent of the Soviet Union to world power status, and changes in global economic and social structures. Notably, the United Nations was established to foster international cooperation and prevent future conflicts, reflecting global hopes for a peaceful future. Despite the devastation of World War II, the United States emerged as an economic superpower, transitioning its factories from wartime production to consumer goods, and entering into international alliances to promote reconstruction and peace. Contrary to experiencing a declining birthrate due to the death of many young American men, the postwar era actually witnessed a significant increase in births, known as the Baby Boom. Meanwhile, the Great Depression did not return; instead, postwar economic growth was common in several regions, particularly in the United States.
As the world rebuilt from World War II, new dynamics of power began to shape international relations. The Cold War, primarily a geopolitical standoff between the United States and the Soviet Union, had a profound impact on global politics, leading to proxy wars and influencing the internal policies of developing nations. During this time, emerging countries struggled with democracy versus authoritarianism, decolonization led to anti-colonial wars and nationalism, and global movements for civil rights and democracy took root, reshaping societies and governments.