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The system of government being referred to here would be a "bicameral" system of government, since there are two main legislative bodies--each intended to deal with a different aspect of each smaller territory (states, in the US).
The last one is the correct answer
A computer or other device accessing the Internet would either be connected directly to a modem that communicates with an Internet service provider (ISP) or the modem's Internet connection would be shared via a Local Area Network (LAN) which provides access in a limited area.
