In January 1918, Teddy Brown from Fairbanks, Alaska, was coming home. As he entered the house, the ten-year-old boy slammed the door shut, stormed into the living room, and demanded that his parents put on their coats. Teddy solemnly proclaimed that he had heard harrowing stories about French children's sufferings and wanted to contribute a weekly donation of seventy-five cents in order to help “a brother” in France. After listening to his pleas, Teddy's parents eventually came to endorse his chosen mission. The family left the house, venturing out into the sub-zero temperatures, and headed to the local committee of the Fatherless Children of France Society (FCFS). By the time Teddy made his commitment, thousands of other American children had already “adopted” orphans in France.

Children and childhood have emerged as important topics for understanding the history of African slavery in the Americas. In historical archaeology, analyses of subadult skeletal remains have provided valuable information about the biological and social conditions of captivity, yet children are infrequently the primary subjects of study in African diaspora bioarchaeology. Recent bioarchaeological research at Hacienda La Quebrada, a late colonial sugar plantation in central Peru, brings new data to bear on these subjects. Excavations at the cemetery for the plantation's enslaved African and Afro-descendant population recovered 158 subadults ranging from newborns to 20 years old, who represented 64% of the burial sample. Paleodemographic data and skeletal indicators of stress indicate that enslaved children were disproportionately affected by the conditions of life at Hacienda La Quebrada, particularly because of insufficient diets and susceptibility to infection and disease. Although these results are specific to the context of plantation slavery in Peru's coastal sugar economy, they contribute new information about the history of African slavery in Peru and about the study of childhood in conditions of captivity and colonialism in the Spanish Americas more broadly.

In the 1920s and 1930s, the Sentinels of the Republic, a conservative citizens' organization, mounted a fierce campaign against the adoption of the federal Child Labor Amendment. The Sentinels were able to defeat the amendment by painting it as a threat to the sovereignty of the male-headed family. This appeal proved an effective rallying cry across sex, class, and faith lines, and galvanized significant opposition to the expansion of state power. Initially formed in 1922, the Sentinels, composed predominantly of elite businessmen, lawyers, and antifeminists, remained an active antistatist lobby throughout the following two decades, and formed a key part of the pro-business lobby that attacked the New Deal. Assessing the gendered political ideology and organizing strategies of the Sentinels reveals how patriarchal ideas about the traditional family played a core and constitutive role in the development of conservative free-market politics.

All kinds of peoples, previously marginalized in favor of the actions and thoughts of elite policy makers, now fill foreign relations histories. African Americans, Native Americans, Asian Americans, women, workers, and many others have been shown to be indispensable—if informal—diplomatic assets. And yet, diverse as this cast of characters has become, notice one thing they share in common: their adulthood. It is as if human experience with foreign affairs only begins with the age of majority. What might be gained once we appreciate the influence of young people, as both audience and agent, in the long history of America's entanglement with the wider world?