They used the astrolabe, which was perfected by the Muslims. They also used the compass, which was invented by the Chinese.
Traveling by land from Europe to China entailed avoiding robbers and soldiers from possible unfriendly nations. Sea travel was possible by sailing around the southern tip of Africa and then finding silk trading ports in India and China. For this reason a sailing route traveling west from Europe was a hope to find a better way to reach Asia.
Europe, Africa, and Asia.
They are Europeans and Asians, because Turkey has a part in Europe and in Asia. Turks origianlly came from the Altay region
Asia.
Asia had a lot goods that were wanted by Europeans. Silks, perfumes, spices, gunpowder, and other things goods were in demand.The new technology in sailing and navigation added to the ability to seek new ways to Asia.
Treade led to the regular sailing of the ships from Europe to Asia
Usually it was because the main trade hub was in Asia and Europeans couldn't get there because of the naturally border dividing mountain range. Thus, people that wanted to trade with Asia needed to sail. this then caused people to believe sailing was more productive than walking.
I believe it was Portugal, specifically Vasco da Gama.
Europeans were most intrested in spices from Asia.
Columbus, and all educated Europeans of his time, already knew that the Earth was round. That required no voyage for proof. The trade routes to Asia via the east were controlled by the Turks (via land) and the Portuguese (for the sea route, so Columbus proposed sailing west to reach Asia. His problem was that his estimate of the size of the Earth was incorrect, so when he reached land in the Caribbean, and later on the American continent, he knew how far he had sailed and thought he had reached Asia.
By shortening the sailing time from Europe to Asia, ships do not have to sail round Africa.
Christopher Columbus was convinced that he could reach Asia by sailing west.
They used the astrolabe, which was perfected by the Muslims. They also used the compass, which was invented by the Chinese.
with their eyes
The advantages was Portuguese ships began making expedition in search of a sea route to Asia. The disadvantages of sailing west from Europe to Asia is they had no maps that showed the world correctly.
in the "scramble" for Asia, Europeans had to deal with Japan.