How did the growth of the railway system during the nineteeth century affect the u. s. economy?

Examine these two paintings that depict famous events from american history. the image on the left, painted in 1940, shows the signing of the u.s. constitution in 1787. the image on the right, painted in 1836, shows the american victory at the battle of yorktown in 1781.which of these paintings should be considered a secondary source?

Why are primary sources important when studying historical events

How does the structure of the body of the declaration of independence support jefferson’s purpose