What was the outcome of the Senate's decision regarding the Treaty of Versailles?

The Treaty of Versailles, which was signed in 1919 to formally end World War I, faced significant opposition in the United States Senate. The correct answer reflects that the Senate ultimately did not ratify the treaty largely due to concerns over the League of Nations, a key component intended to maintain peace. Many Senators feared that joining the League would compromise U.S. sovereignty and involve the country in foreign conflicts without congressional approval.

This outcome was influenced by political differences, notably between President Woodrow Wilson, who strongly supported the treaty, and a faction within the Senate known as the "Reservationists" led by Henry Cabot Lodge. These Senators were willing to support a modified version of the treaty but were adamantly opposed to it as it was initially proposed. Wilson's refusal to accept amendments or reservations ultimately led to the failure of the treaty in the Senate.

Other choices do not accurately represent the historical reality: the treaty was neither ratified nor approved with amendments, showcasing the deep divisions in American politics of that era over foreign policy and the commitment to international organizations.