What are some of columbus positive characteristics

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?

Which is not an abundant natural resource found in africa?

The map shows information about river valley civilizations. which feature of this map best the reader determine the distance between two places?