The emergence of "rock and roll" is associated with which of these eras?

Which of the following brought about the final settlement of the official boundary lines of the state of texas? the peace treaty of the mexican-american war the 1845 act signed by the president that made texas a state the reincorporation of texas at the end of the civil war the compromise of 1850

What did the u.s. want to build on the land acquired through the gadsden purchase?

Taught and wrote on a staggering array of subjects, including physics, chemistry, astronomy, ethics, politics, and literature