Which of the following sparked the sand creek massacre?

a. sioux indian attacks on stagecoach lines

b. failure of the fort laramie treaty

c. indian interest in gold mining

d. attacks by white settlers on sioux indians

the industrial revolution pushed the world into modern industrialization. it changed the course of history profoundly. it caused rapid urbanization and pushed cities and countries into development. the industrial revolution began in great britain with a series with new inventions which led to the creation of machines and mass production.

this caused the country to gain wealth and money and become an international superpower. it improved transportation and manufacturing inside the country, pushed people to live in urban areas and britain to become the most powerful nation in the world for a while.