During the Trojan War. :)
The Pilgrims intended to land in Northern Virginia, which at the time included the region as far north as the Hudson River in the modern State of New York. The Hudson River, in fact, was their originally intended destination.
Answer:
John Wesley Powell
Explanation:
The Exploration of the Colorado River and Its Canyons by John Wesley Powell is a classic of American exploration literature. It is about the Powell Geographic Expedition of 1869 which was the first trip down the Colorado River by boat, including the first trip through the Grand Canyon.
The giant redwood trees of Muir have an average age of 800 to 900 years, while it's height is of 100 and 150 metres.