Compare the Supreme Court's original jurisdiction with its appellate jurisdiction.

Original jurisdiction means that the court has the right to hear the case first. Appellate jurisdiction means that the court hears an appeal from a court of original jurisdiction. The circuit courts exercise only appellate jurisdiction. These courts hear appeals from the lower federal courts.

Explanation:

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain