How did elevated trains and subways improve urban transportation

Were african-americans allowed to serve in the military in wwi?

The 20th century was characterized by increasing globalization describe some of globalization major effects then identify whether the effects of globalization were better for developed countries or developing countries

Select the correct answer. in what type of immunity will the defenses be triggered and react in the same manner, regardless of the organism invading? a. adaptive b. innate c. primary d. mechanical barrier