The sumerians were adept at and developing effective systems a. roads, communication c. bridges, aqueducts b. canals, irrigation d. pyramids, canals

How does a comet change when it comes close to the sun

Examine this list of events that took place in china during the 20th century. which event or events could possibly have been a cause of the great leap forward? a. i only b. i, iii, and iv c. i and iii d. iii and iv

Why is it important that dr. luther king jr. use non-violent protest to create social change?