Farm fields can span hundreds of acres. With so much area to cover, checking crops and livestock can be difficult. But with an agricultural drone, this job becomes much simpler. Young readers will discover how drones help farmers maximize efficiencies and bring abundant harvests.

When World War I ended in 1918, it was called, "the war to end all wars." But it wasn't. Unsettled issues and resentments festered for the next 20 years, culminating in the outbreak of war in Europe and Asia in the 1930s. The Axis powers, led by Germany, Italy, and Japan, joined to fight the Allies, led by the U.S., the United Kingdom, and the Soviet Union. Both sides were determined to rule the world, but only one can succeed.

Explores the plants, animals, and environment that make up coral reef ecosystems.

The War of 1812 began as a disagreement over trade and shipping between Great Britain and the United States. Although neither side truly won, the United States gained a greater sense of national identity, setting the stage for its westward expansion.

"Facts about the Zapotec indigenous peoples of Mexico. Includes information about their traditions, myths, social activities, the development of their culture, methods of hunting and gathering, rituals, and their daily lives. Intended for fifth to eighth grade students"--Provided by publisher.