<span>Congress has the power to introduce and pass laws. The president has the responsibility of enforcing all federal laws. This is an example of separation of powers. In every democratic form of government, powers are divided to the three branches of government: executive, legislative, and judicial. </span>
Renewable energy sources are important in Eastern Europe because they allow sustainable development.
They made use of the resources around them is one reason why early clans of hunter-gatherers are not considered civilizations. When you talk about civilizations, it means that people are building something or forming a society for development.
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