What were some positive impacts of the transcontinental railroad?

Why is it useful for historians to base certain studies on the analysis of historical themes

Which statement describes the influence of elizabeth i on england? a. her great inherited wealth made requesting funds from parliament rarely necessary, which minimized conflicts. b. her skillful use of personal advisers to communicate her wishes to parliament promoted stability. c. her clever secret diplomacy and many successful wars made her popular with the english people. d. her continuing support of english explorers in the americas brought in vast supplies of silver and gold.

The fact that were was no national military under the articles of confederation was a weakness in which area of government? a.)legislative b.)judicial c.) administrative d.)economic