Question 1. Construction on the first transcontinental railroad began during A. American Revolution
B. War of 1812
C. Civil War

Question 2. The railroad line connected the west coast to existing lines in

A. Iowa
B. Kansas
C. Nebraska

Question 3. The city was chosen as the final destination

A. Seattle
B. Sacramento
C. San Francisco

1.C

2.B

3.A

Hope this help's have a great day no homo!

answer; ///i believe that the correct answer is (a) the great depression

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: