Post–World War II baby boom in the context of "Parity progression ratios"

The demography of France is monitored by the Institut national d'études démographiques (INED) and the Institut national de la statistique et des études économiques (INSEE). As of 1 January 2025, 66,352,000 people lived in Metropolitan France, while 2,254,000 lived in overseas France, for a total of 68,606,000 inhabitants in the French Republic. In January 2022, the population of France officially reached the 68,000,000 mark. In the 2010s and until 2017, the population of France grew by 1 million people every three years - an average annual increase of 340,000 people, or +0.6%.

France was historically Europe's most populous country. During the Middle Ages, more than one-quarter of Europe's total population was French; by the seventeenth century, this had decreased slightly to one-fifth. By the beginning of the nineteenth century, other European countries, such as Germany and Russia, had caught up with France and overtaken it in number of people. The country's population sharply increased with the baby boom following World War II, as it did in other European countries.

Ideal Toy Company was an American toy company founded by Morris Michtom and his wife, Rose. During the post–World War II baby boom era, Ideal became the largest doll-making company in the United States. Their most popular dolls included Betsy Wetsy, Toni, Saucy Walker, Shirley Temple, Miss Revlon, Patti Playpal, Tammy, Thumbelina, Tiny Thumbelina, and Crissy. The company is also known for selling the Rubik's Cube.

Betsy Wetsy was a "drink-and-wet" doll originally issued by the Ideal Toy Company of New York in 1937. It was one of the most popular dolls of its kind in the Post–World War II baby boom era.

Named for the daughter of Abraham Katz, the head of the company, the doll's special feature was simulating urination after a fluid was poured into her open mouth. Betsy Wetsy was also one of the first major dolls to be produced in African American versions.