How did railroads expansion make natural resources more available in the u. s?

In at least two paragraphs, discuss the differences between the principles of republicanism and democracy. explain whether you think the united states is more of a republic or a democracy. refer to at least one example from the constitution. (10 points)

Which best describes california population when it became a state in 1850? a.because of the gold rush attracting settlers all over the world california population diverse.bcalifornia had banned foreign immigrants at the start of the gold rush.so,the states population was made up of entirely of americans from other parts of the country.c california had a large african population because many southern planters had moved their enslaved africans to start large farms.d the indian removal act had led to the relocation of thousands of eastern native americans to california.as,a result the majority of californias population was native american

Which of the following do scientists believe about homo sapiens?