What do all cultures need before a civilization can begin?

What are the media and the press sometimes referred to as? a. the fourth estateb. the sixth branchc. the mouthpiece of the governmentd. the first estate

Human beings spread all around the world over a period of millions of years. identify when humans arrived in different regions of the world. 200,000 years ago 100,000 years ago 40,000 years ago 30,000 years ago

During the 1800s, an important pull factor for immigrants to the united states was