For history why might most of the major pre-columbian mesoamerican civilizations have existed in the areas of southern mexico?

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

Which quotation from the declare ration of independence shows the idea of the social contract

Why did the us military stop the dakota uprising ?