1 and 4 are
pull factors of migration .
The main political unit that emerged in the world is A. the state. A state is defined as a territory or land in which a defined number of constituents is ruled over a governing body that follows and implements a system without following necessarily a superior power. I think this is powerful enough.
Answer:
Britain, France, Russia (USSR), and the United States
Explanation:
<span><span>Factors like water source, trade routes, connectivity and location are some of the most important factors determining the trade.
The US faced and opened to the pacific as new market or trading areas because of:<span /></span>
1. Resources. One is resources and its availability is one crucial factor. </span>
<span>2. Cost. Pay is much lesser and human resource is high</span><span>
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