Answer:
C. Railroads connected cities and markets from coast to coast,
making it easier for new immigrants to migrate between shifting
employment opportunities

The three staples of Native American food are corn, squash, and beans. Other foods that have been used widely in Native American culture include greens, Deer meat, berries, pumpkin, squash, and wild rice.
The Native Americans are well revered for being resourceful people, and when it comes to Native American food, there is no difference. They were well versed at using the ingredients that were readily available to them and for making many different foods with them. Corn and various corn products are abundant in Native American food recipes and they have lent many of their earliest delicacies to the American culture as a whole.

Answer:
Along the coast of North Africa sea port cities developed such as Marrakesh, Tunis, and Cairo. The port city of Adulis on the Red Sea was also an important trade center. The major trade routes moved goods across the Sahara Desert between Western/Central Africa and the port trade centers along the Mediterranean Sea.