The United States acquired the Oregon Territory, Texas, New Mexico, and California during James Polk's presidency.
Answer: Option D
Explanation:
James Polk was America’s 11th President and had served the office from 1845-1849. He had greatly contributed for the extension of American Territory across the continent and it is said that during this period the American territory expanded by more than 1/3.
He had set the four main goals which included the acquisition of Territory of New Mexico and California and also securing the Oregon Territory. In the 1st year of his tenure, U.S. occupied the Texas and became its 28th State.