World population is the number of humans living on Earth. This unit describes how the world’s population has grown over the centuries, where people live , the problems that countries have and the dangers of overpopulation.
Ancient Rome was the center of one of the largest and most powerful empires in history. With its center in today’s Italy, the Roman Empire conquered the whole Mediterranean region and spread its influence to the Middle East, Northern Africa, Western and Central Europe.
India is an Asian subcontinent that reaches into the Indian Ocean. With 1.3 billion people it is the second most populous country in the world.
Our solar system is made up the sun, eight planets, more than 150 moons, as well as comets, asteroids, dwarf planets and other space rocks.
African Americans are citizens of the United States with ancestors who came from Africa. Their forefathers were brought to American colonies as slaves in the 17th and 18th centuries.
The European Union is a post – World War II project designed to secure peace in Europe.
The President of the United States is probably the most powerful leader of the world. He has many duties, like signing bills and commanding the armed forces. The president’s advisors get together in the Cabinet.
Capital punishment, also referred to as the death penalty, is the killing of a criminal who has been sentenced to death by a court. In most cases it is used for murder, but the death penalty has also been applied to rape, treason and other crimes.