20 Points. Which development allowed people to move between cities, suburbs, and the country easily?(1 point) A. Transcontinental Railroad

B. telegraph

C. mass production

D. Model T

The belmont principle of beneficence requires that: a. subjects derive individual benefit from study participation.b. potential benefits justify the risks of harm.c. the study makes a significant contribution to generalizable knowledge.d. risks are managed so that they are no > minimal.

Federalism began to spread super soon after

Lots of points: economics: the is the dollar value of all final goods and services produced within a country’s borders within a given year. a. gross domestic product b. business cycle c. inflation rate d. net exports