When we elect representatives to Congress we are applying this principle of
government

Popular Sovereignty

Explanation:

When the representatives are elected to congress, the principle of government that applies is the Popular sovereignty. The principle of popular sovereignty states that the authority and power to create as well as sustain the government lies among the people of the country. It is based on the concept that people are real rulers in a democracy and the elected representatives are servants of people who are the sovereigns.

answer; /// i do believe that its napolean's conquest of spain;