European migration patterns show a dispersion throughout the world. african migration patterns show concentrated numbers migrating to europe and the americas. how could you use history to propose a possible connection between these two migration patterns?

Witch one is it soo it the the question b. a,b, c,d

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted

Explain the reason for having an equator and a prime meridian. how do these two lines us to navigate our world? describe your opinion in at least two to three sentences.