What new invention brought an end to the "era of the cowboy"?

What was constantinoples government

How were the european systems of mercantilism and capitalism similar during the 18th and 19th century

What does the quote describe? “the closeness of the place, and the heat of the climate, added to the number in the ship, which was so crowded that each had scarcely room to turn himself, almost suffocated us….the shrieks of the women, and the groans of the dying, rendered the whole a scene of horror almost inconceivable.”