Valleys can be found in areas where there are alot of Mountains, Canyons can be found in places near rivers, plains are found in central North America, and Volcanoes can be found on islands.
An estuary is where salt water and fresh water meet. Estuaries are usually found at the edge of the coast, where the ocean water, or salty water, meets river, lake, any fresh water source, water.
A tributary is something completely different. It is a, usually smaller than the main river or lake, river/stream stemming off a bigger river or lake, or flowing into that river or lake.
<span>The first Europeans to come to Africa were funded by Prince Henry of Portugal. The purpose was to expand geographic knowledge, find gold, and locate Asian spices. That soon change to exporting slaves. They created a places called Elmina Castle that was originally used for trading ivory and gold but then change into for slave export. Slaves were soon capture inland over a brutal journey that resulted to half the slaves not surviving the journey. They were traded for different things like silk and beads. Soon after in became really popular for Europeans to do slave trade. Mainly because the native in America would die from disease that the European brought and most of the native fled to the other side to escape which is why European looked toward Africa for the slaves. There was a book that you could get that would help with slave trade. The book name is “An Englishman Tastes the Sweat of an African”. Slavery for with the European were more brutal than slavery in Africa. The slaves in Africa were able to marry, own property, and even own slaves themselves. It was so much better that slavery wasn't passed down generation after generation like it was done by the Europeans. Europeans ships brought 10 to 12 millions of Africans to America. There were more than 54,000 voyages back and forward from the West African coast to America. Because of these events slavery continue for more than 300 years.</span>
Answer:
A straight angle measures 180°. ... An angle can be measured using a protractor, and the angle of measure 90 degrees is called a right angle. In a right angle, the two arms are perpendicular to each other. When the right angle is divided into two equal parts each angle measures 45°.
