Early civilizations of the Indus Valley:

had clever city planners
had weak governments and strong armies
declined mainly due to natural disasters
had thriving farms that allowed job specialization
had strong central governments and were relatively sophisticated

which one of these are correct: select all that apply

Plz me match the correct text in each cell to identify the contributions to the war effort of the three facilities listed. 1. built b-29s, putting hundreds of the war's most advanced aircraft into service 2. large civilian workforce transported soldiers and goods to the two war fronts; built "liberty ships" to move men and supplies across the ocean 3. trained new recruits, held prisoners of war, repaired damaged aircraft, prepared thousands of soldiers for combat bell bomber plant military bases brunswick

Who gave the famous "i have a dream" speech at the march on washington?

Which us president proposed a decimal based measurement system for the us