One of the most influential Native American tribes on the Great Plains was the Arapaho, a group so renowned among neighboring Native Americans that it's believed their name came from a Pawnee word for "trader. Like other notable Plains tribes, the Arapaho split off from other groups around the 16th-17th centuries and shifted from a sedentary agricultural society to the kind of nomadic group many envision when thinking of groups on the Plains.

Learning about the 1,800-mile journey made by Chief Joseph and 800 Nez Perce men, women, and children from their homelands in what is now eastern Oregon to Montana is essential to understand who we are as a nation. There, only 40 miles from the Canadian border and freedom, Chief Joseph, convinced that the wounded and elders could go no farther, walked across the snowy battlefield, handed his rifle to the US military commander who had been pursuing them, and spoke his now-famous words, "From where the sun now stands, I will fight no more forever."

One of the most famous Native American tribes on the Great Plains is the Cheyenne, and their fame may be surpassed only by their influence on American history. The Cheyenne shifted from a sedentary agricultural society to the kind of nomadic group many envision when thinking of groups on the Plains. Land disputes and conflicts with white settlers and the Cheyenne set in motion the chain of events that led to the most famous battle among Native Americans and the American government: the Battle of the Little Bighorn.

The Apache of the American Southwest have achieved almost legendary status for their fierceness and their tenacity in fighting the US Army. Names like Nana, Cochise, and Geronimo are synonymous with bravery and daring, and the tribe had that reputation long before the Americans arrived. Indeed, among all the Native American tribes, the Spanish, Mexicans, and Americans learned the hard way that the warriors of the Apache were perhaps the fiercest in North America. Based in the Southwest, the Apache fought all three in Mexico and the American Southwest.

From the Trail of Tears to Wounded Knee and Little Bighorn, the narrative of American history is incomplete without the inclusion of the Native Americans that lived on the continent before European settlers arrived in the 16th and 17th centuries. Since the first contact between natives and settlers, tribes like the Sioux, Cherokee, and Navajo have both fascinated and perplexed outsiders with their history, language, and culture.

They call themselves "Niitsitapi" ("Original People"), but in the United States, they are known as the Blackfeet. In Canada, they are known by their more particular band names, one of which is Blackfoot, but regardless of the name, they are a tribe of Native American peoples ("First Nations" in Canada) who, until the modern time period, lived in small, decentralized bands and hunted the bison on the northern Great Plains.

It's no surprise that the Shawnee continue to be closely associated with their most famous leader, Tecumseh, the most famous Native American of the early 19th century. While leading the Shawnee, he attempted to peacefully establish a Native American nation east of the Mississippi River in the wake of the American Revolution. Together with his brother Tenskwatawa, Tecumseh was in the process of forming a wide-ranging, Native American confederacy that they hoped would stem the westward flow of Anglo-American settlers.

Among all the Native American tribes, the Spanish, Mexicans, and Americans learned the hard way that the warriors of the Apache were among the fiercest in North America. Based in the Southwest, the Apache fought all three in Mexico and the American Southwest, engaging in seasonal raids for so many centuries that the Apache struck fear into the hearts of all their neighbors. Given the group's reputation, it's fitting that they are inextricably associated with one of their most famous leaders, Geronimo.

For centuries, the Comanche thrived in a territory called Comancheria, which comprised parts of eastern New Mexico, southern Colorado, northeastern Arizona, southern Kansas, Oklahoma, and some of northwest Texas. Before conflicts with white settlers began in earnest, it's been estimated that the tribe consisted of more than 40,000 members. While the Comanche are still a federally recognized nation today and live on a reservation in part of Oklahoma, they have remained a well-known tribe due to their 19th century notoriety.

Empire of the Summer Moon spans two astonishing stories. The first traces the rise and fall of the Comanches, the most powerful Indian tribe in American history. The second entails one of the most remarkable narratives ever to come out of the Old West: the epic saga of the pioneer woman Cynthia Ann Parker and her mixed-blood son, Quanah, who became the last and greatest chief of the Comanches.

The Mongol army led by Genghis Khan subjugated more lands and people in 25 years than the Romans did in 400. In nearly every country the Mongols conquered, they brought an unprecedented rise in cultural communication, expanded trade, and a blossoming of civilization.

In the summer of 1846, the Army of the West marched through Santa Fe, en route to invade and occupy the Western territories claimed by Mexico. Fueled by the new ideology of “Manifest Destiny,” this land grab would lead to a decades-long battle between the United States and the Navajos, the fiercely resistant rulers of a huge swath of mountainous desert wilderness.

Oliver Otis Howard thought he was a man of destiny. Chosen to lead the Freedmen's Bureau after the Civil War, the Union Army general was entrusted with the era's most crucial task: helping millions of former slaves claim the rights of citizens. He was energized by the belief that abolition and Reconstruction, the country's great struggles for liberty and equality, were God's plan for himself and the nation.

Born in an era of rising violence, Black Elk killed his first man at Little Big Horn, witnessed the death of his second cousin Crazy Horse, and traveled to Europe with Buffalo Bill's Wild West show. Upon his return, he was swept up in the traditionalist Ghost Dance movement and shaken by the massacre at Wounded Knee. But Black Elk was not a warrior, and instead chose the path of a healer and holy man, motivated by a powerful prophetic vision that haunted and inspired him.

The great Oglala Sioux chief Red Cloud was the only Plains Indian to defeat the United States Army in a war, forcing the American government to sue for peace in a conflict named for him. At the peak of their chief’s powers, the Sioux could claim control of one-fifth of the contiguous United States. But unlike Sitting Bull, Crazy Horse, or Geronimo, the fog of history has left Red Cloud strangely obscured. Now, thanks to painstaking research by two award-winning authors, his incredible story can finally be told.