What did the babylonians use to track time

Round arches allowed the romans to create structures with

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?

All state and federal officials are required to take an oath to support the constitution. select the best answer from the choices provided t f