Which of the following would cause the production possibilities curve shown above to shift outward?
MISSILES
STEEL
Reopening steel plants that had been closed
Rehiring laid-off steelworkers
Using machinery for missile production instead of steel production
Developing a more efficient steelmaking process

the great wall of china worked as a defense for the feudal states of the zhou dynasty to the north. during the warring states period more walls were put up to defend the borders of the different kingdoms. it was semi successful because despite the wall, the mongols eventually conquered china also the great wall provided protection to the economic development and cultural progress, safeguarded the trading routes such as the silk road, and secured transmission of information and transportation. @jayxboof

d) the constitution rights of native americans and their right to self-government on reservations

vote for officials is the right answer