What is one result of advances in medical technology

The sixth amendment of the u.s. constitution guarantees the right to which of the following?

President clinton, on the fortieth anniversary of the events in arkansas surrounding the "little rock nine," stated that "when the constitutional rights of our citizens are threatened, the national government must guarantee them." this principle was the basis for using federal authority in: the expansion of voting rights to women. the passage of the civil rights act of 1964. the passage of the americans with disabilities act. all of the choices.

What is the name for the main idea behind the settling of western lands by americans in the early-1800s?