<span>Nationalism in the Balkans and a system of military alliances is the best selection for the major cause of World War One. </span>
Answer:
Explanation:
In 1844, James K. Polk of Tennessee was elected president on a platform of westward expansion. He faced off with the British over control of the Oregon Territory and oversaw a successful war with Mexico, 1846–1848. The Mexican War and settling the Oregon question meant that the United States now stretched from the Atlantic to the Pacific. Western expansion soon took a major leap forward with the California Gold Rush, as thousands from the eastern states, as well as from foreign nations, headed for the territories of California and Nevada, hoping to strike it rich.
Effects of the Antebellum Period
The technological advances and religious and social movements of the Antebellum Period had a profound effect on the course of American history, including westward expansion to the Pacific, a population shift from farms to industrial centers, sectional divisions that ended in civil war, the abolition of slavery and the growth of feminist and temperance movements.
the only right answer is d. hope this helped you
Americans were tired of war and the US should end it quickly.
