The "Trinitarios" were backed by Pedro Santana, a wealthy cattle rancher from El Seibo, who became general of the army of the nascent republic. The Dominican Republic's first Constitution was adopted on November 6, 1844, and was modeled after the United States Constitution. The decades that followed were filled with tyranny, factionalism, economic difficulties, rapid changes of government, and exile for political opponents. Archrivals Santana and Buenaventura Báez held power most of the time, both ruling arbitrarily. They promoted competing plans to annex the new nation to another power: Santana favored Spain, and Báez the United States.