Answer:
Desire, something that lots of people lack nowadays :/
Generally speaking, it would be "civil rights" that people gain as part of living under an organized government, although of course this depends greatly on the government in question.
The Treaty of Guadalupe Hidalgo ended the U.S.-Mexican<span> War. </span>Signed<span> on </span>2 February 1848<span>, it is the oldest treaty still in force between the ... basic form it called for the cession of Alta and Baja </span>California <span>and </span>New Mexico<span>, the right of transit across the Tehuantepec isthmus, and the </span>Rio Grande<span> as the southern </span>border<span> of </span>Texas<span>.</span>
Direct election of U.S. senators is your answer!