Leonardo didn't just paint, he was also a sculptor, an anatomy expert and an engineer, and he managed to predict the steam engine, the tank and the submarine.
Leonardo designed a multitude of mechanical devices, including parachutes, and studied the flight of birds as well as their structure. About 1485 he drew detailed plans for a human-powered ornithopter (a wing-flapping device intended to fly).
An ornithopter is an aircraft that flies by flapping its wings. Designers seek to imitate the flapping-wing flight of birds, bats, and insects.
<span>Leonardo da Vinci is the Renaissance man responsible for the ornithopter. The ornithopter is a type of aircraft whose wings flap, causing it to fly. This format mimics the natural motion of animals that fly (like bats and birds). </span>
The three religions of Judaism, Christianity and Islam readily fit the definition of monotheism, which is to worship one god while denying the existence of other gods.
Generally speaking, the four main forms that nationalism can take in terms of a international connection would be "political, racial, cultural, and linguistic," but of course it can take other forms easily as well.
