Please help me, I do not understand

Question 10 of 102 pointswhat was one major effect of the spread of railroads throughout great britainduring the industrial revolution? oa. factories were able to more easily ship manufactured goods tomarkets across the country.ob. agricultural production fell substantially due to farmland beingreplaced with railroads.oc. steam engines fell from popularity due to railroads' reliance onalternative energy sources.od. iron replaced coal as the most important raw material produced ingreat britain.submit

Why did countries not allow jewish refugees asylum?

Plz which of the following countries did not claim the oregon country in the early 1800s. a. russia. b. britain. c. the united states d. france.