What happened in russia in 1917 that led the united states to justify its involvement in world war i as a fight for democracy? a. russia signed a military defense treaty with france and great britain. b. russia signed the treaty of brest-litovsk and made peace with the germans. c. russian revolutionaries overthrew the czar and established a provisional government. d. russian bolsheviks, under vladimir lenin's leadership, toppled the provisional government.

not too sure on this one thinking tyo organize the division of africa

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.

ok i will try

explanation: