boundaries

"As two ocelots attempt to cross the United States-Mexico border, they face obstacles that drive home the catastrophic effects of a wall on the plants and animals of the border--and the many benefits of keeping the border barrier-free"--Provided by publisher.

"Explores the meaning of the frontier throughout the full sweep of U.S. history--from the American Revolution to the War of 1898, the New Deal to the election of 2016"--Amazon.

In 1851, Elizabeth Parker, a free black child in Chester County, Pennsylvania, was bound and gagged, snatched from a local farm, and hurried off to a Baltimore slave pen. Two weeks later, her teenage sister, Rachel, was abducted from another Chester County farm. Because slave catchers could take fugitive slaves and free blacks across state lines to be sold, the border country of Pennsylvania/Maryland had become a dangerous place for most black people.

Discusses political and cultural divisions of East Germany and West Germany leading up to the Iron Curtain.

Portrays in graphic form the geographical dimension of each of the world's major current or potential trouble spots.