The answer is the invention of the wheel. The invention of the wheel was not a factor of immigration.
Answer:
Ocean and Rivers is the correct answer.
Explanation:
This quote illustrates the role of a Commander-in-chief. When the country is invaded or attacked, the president has powers to take <em>critical decisions</em> to deal with the imminent conflict. In the case of any crisis, the president is requesting the congress for <em>similar executive powers</em> in order to wage a war agaisnt the emergency, as if it were a real war.
When humans first started to appear they had yet to figure out how to farm or fish. However they knew how to hunt animals using spears and such. They also were gatherers because they gathered berries. Later in the human race farming and fishing came into play. So I say A. Hunters......Gatherers.
<span>The Incas built temples, forts and roads out of huge stone blocks and were the first to build suspension bridges.
Hope I helped :)</span>