From Lewis and Clark to Apollo 11: key US expeditions

For more than two centuries, the United States has played a leading role in exploration, from charting unknown land to reaching space.

Early missions such as the Lewis and Clark expedition, launched in 1803 under President Thomas Jefferson, helped map vast territories and expand scientific knowledge of North America.

In the early 20th century, explorers like Robert Peary and Matthew Henson pursued the North Pole, relying heavily on private funding to support long and costly expeditions.

Similarly, Charles Lindbergh’s 1927 solo flight across the Atlantic was financed by a group of private investors who saw potential in advancing aviation technology.

By the mid-20th century, exploration had expanded beyond Earth. The Apollo 11 mission in 1969 marked a major milestone, as humans landed on the Moon for the first time. The program involved hundreds of thousands of workers across government agencies and private companies, highlighting the scale of collaboration required.

Across these efforts, a consistent pattern emerges. Exploration has been supported by a combination of government initiatives, private capital, and technological innovation.

Strong patent protections and a competitive economic system have also helped drive development, enabling new technologies to be created and applied to exploration.