I NEED HELP PLS How did the use of metal tools most affect the development of civilizations during the Neolithic Age?

a
by allowing for the development of long-distance trade
b
by improving the transportation of goods between regions
c
by expanding the productivity of agricultural labor
d
by increasing dependence on hunting and gathering

The map shows the allied strategy in the pacific. what does the movement of allied troops reveal about their strategy? the allies’ objective was to reach japan as soon as possible. the allies kept getting diverted in their quest to reach japan. the allies overtook outlying islands to make access to japan easier. the allies retreated just before they reached the first set of islands.