The Roman Emporor is Augustus
Having started upstream on the Missouri River<span> from their </span>St. Louis<span>-area camp—where they had been preparing for the expedition since fall 1803—on May 14, William Clark and nearly four dozen other men met up with Meriwether Lewis on May 20. hth</span>
Around 6 million Jewish people were killed.
You can try out this book, its my favorite so far.
Tuck Everlasting by Natalie Babbitt.