While much of the United States has been mapped and surveyed, there are still remote areas, particularly in regions like Alaska, the wilderness of the Pacific Northwest, and certain national parks, that remain relatively unexplored in terms of detailed scientific study and biodiversity assessment. It's estimated that several million acres of land may still hold undiscovered species and ecological insights. However, the concept of "exploration" can vary, as many areas have been visited but not extensively studied or documented. Overall, while the majority of the U.S. is known, there are still significant opportunities for discovery.
Hernando De Soto
Lewis and Clark explored the Louisiana Territory.
Spain
Spanish
The US Mint had not yet been established in 1770 and therefore there are no 1770 US silver dollars.
The Moon since NASA was in the US
Colombus
Hernando de Soto explored much of Colorado, New Mexico, Arizona, and southern California.
luous and clarc
We don't know yet what is good on Mars or how it may benefit us. However, not exploring will not benefit us at all. Had we not explored we would not have 'found' the new world.
Hernando De Soto
Hernando de Soto
Hernando de Soto
Hernando de Soto
Juan Ponce de Leon
Hernando de Soto
Juan Ponce de Leon