In ‘This Week in History,’ the Treasury Department and Congress worked to stifle counterfeiting during the Civil War, leading to major changes in banking.

This year marks an important anniversary of the Cold War’s first military conflict and the unmitigated success it became.

In ‘This Week in History,’ B&O Railroad’s dominance was undercut by a growing competitor, resulting in an industry-changing innovation.

A premature claim about the discovery of one of history’s most famous ships leads to an American-Australian science rift.