Which development had the most impact in the united states? in continental europe?

What affected the second industrial revolution have on transportation

Plz which of the following provisions of the compromise of 1850 was designed to appeal to slave states? a. congress passed a strict fugitive slave law. b. the slave trade was banned in washington dc. c. texas agreed to give away some of its land so that the territory would be available for future states. d. california was admitted to the union as a free state.

What was one major cause of worldwide conflict during the first decade of the 21st century?