9-10 years

We the people at Who HQ bring readers the full story--arguments and all--of how the United States Constitution came into being. Signed on September...

Step back in time to the birth of the United States of America and meet the real-life rebels who made this country free!On a hot summer day near Ph...

Hear ye, hear ye! Get ready to learn all about the most powerful court in the United States.Ever since it was established in 1789, the United State...

Land ho! Discover what the Age of Exploration was all about in this wonderful addition to the bestselling Who HQ series!Before the fifteenth centur...

A terrifying attack! On December 7, 1941, Japanese war planes appeared out of nowhere to bomb the American base at Pearl Harbor in Hawaii. It was a...

How did a spontaneous protest outside of a New York City bar fifty years ago spark a social movement across America? Find out about the history of ...

Travel back to the time when the mighty dinosaurs ruled the earth.The Age of Dinosaurs began about 250 million years ago. In the beginning they wer...

The Berlin Wall finally came down in 1989. Now readers can find out why it was built in the first place; and what it meant for Berliners living on ...

On October 29, 1929, life in the United States took a turn for the worst. The stock market – the system that controls money in America – plunged to...

A thoughtful and age-appropriate introduction to an unimaginable event—the Holocaust.The Holocaust was a genocide on a scale never before seen, wit...

A mesmerizing overview of the world as it was when glaciers covered the earth and long-extinct creatures like the woolly mammoths and saber-toothed...

Oh, rats! It's time to take a deeper look at what caused the Black Death--the deadliest pandemic recorded in human history.While the coronavirus CO...

Something wicked was brewing in the small town of Salem, Massachusetts in 1692. It started when two girls, Betty Parris and Abigail Williams, began...

No one knows where the term Underground Railroad came from--there were no trains or tracks, only "conductors" who helped escaping slaves to freedom...

This baseball league that was made up of African American players and run by African American owners ushered in the biggest change in the history o...

Let's glow! Wrap this 7' LED light tube around any bike frame or any standard bike wheels 20" or larger to light up the night in style cruising alo...

It was world-famous sculptor Gutzon Borglum's dream to carve sixty-foot-high likenesses of four presidents on a granite cliff in South Dakota. Does...

Readers will want to grab a telescope and explore the night skies after finishing this overview of our solar system.Our solar system consists of ei...

More than two thousand years ago, with his land under constant attack from nomads, the First Emperor of China came up with a simple solution: build...

Building the most magical place on earth was no fairy tale. Learn the story behind the creation of Walt Disney World.In 1964, when Walt Disney and ...