Answer: Winner-takes-all elections> The dominance of the two major parties
Explanation: apex said so :)
Polk instructed Slidell to make an offer that the U.S. would pay off Mexico's debt in order to acquire "Upper California and New Mexico" and would spend as much as $40 million to purchase the land. . . . the war he fought against Mexico . . .
Government positions: President of the United States
When Madero was murdered in February 1913, Carranza drew up the Plan de Guadalupe, a purely political plan to oust Huerta. Carranza became the leader of northern forces opposed to Huerta. He went on to lead the Constitutionalist faction to victory and become president of Mexico.