Archaeological discoveries

What artifacts would show that Spanish explorers reached California?

* Mission ruins. The Spanish established a chain of missions along the California coast, from San Diego to Sonoma. The ruins of these missions are still standing today and are a testament to the Spanish presence in California.

* Presidios. The Spanish also built a number of presidios, or forts, in California. These presidios were used to protect the missions and the Spanish settlers. The remains of some of these presidios are still visible today.

* Artifacts. Archaeologists have found a variety of artifacts that show that Spanish explorers reached California. These artifacts include Spanish coins, pottery, tools, and weapons.

* Documents. There are also a number of documents that show that Spanish explorers reached California. These documents include diaries, letters, and maps.