Final answer:
James K. Polk strongly supported the annexation of California and was willing to use force if necessary.
Step-by-step explanation:
James K. Polk, the 11th President of the United States, strongly supported the annexation of California. Polk had set his sights on acquiring the Mexican provinces of New Mexico and California, along with Oregon, and was prepared to use force if necessary. He believed that California was of great importance to the United States and hoped to obtain it peacefully but was willing to go to war if needed.