Spain was the first country to explore the coast of Florida.
Spain is one country, who explored southwestern portion of what is now the United States.
Spain
Spain
conquistadors
Christopher Columbus
He didn't explore Spain. as it was already known as a country.
Spain
Spain did, by Franciso Vazquez de Coronado.
Spain.
Spain
Spain IS an European country so no European country explored it. People settled there thousands of years ago .