Help please this history grade 10

A commercial airliner today would take about 50 hours to complete a turn around the maximum circumference of the Earth, the Equator, a distance of 40,000 kilometers. Five hundred years ago, however, little was known about the real size of our planet. The ancient Greeks were aware that the Earth is a sphere, and had even estimated how large it was; and Christopher Columbus had already set foot in Central America. However, the immensity of the Pacific Ocean was still outside the realm of knowledge, and the southern tip of South America had not even been sighted yet.

The Treaty of Tordesillas of 1494 had divided the globe into two zones for maritime exploration and trade. The Western zone, which embraced almost the entirety of the Americas, was set aside for Spain, while the eastern zone – including the western coast of Africa and the route to the Indian Ocean and Asia – was reserved for the Portuguese.

So, since Spain was barred from reaching Asia by means of the hitherto known route around the African continent, it now sought to find an alternative route to the Spice Islands—known today as the Moluccas.

The world, as carved up by the Treaty of Tordesillas.

That was when Fernão de Magalhães (Ferdinand Magellan), a Portuguese seaman who had spent eight years in the Portuguese Navy in the Indian Ocean and knew the area well, proposed an expedition to find a westward sea route to Asia. After being rebuffed by the King of Portugal, who already had his own exclusive African route, Magellan was granted a command by King Charles I of Spain—also known as the Holy Roman Emperor Charles V. The mission would turn out to be pioneering in the exploration of the globe.

Magellan–Elcano circumnavigation...It was a Spanish expedition that sailed from Seville in 1519 under the command of Ferdinand Magellan, a Portuguese, in search of a maritime path from Spain to East Asia through the Americas and across the Pacific Ocean, and concluded by Spanish navigator Juan Sebastian Elcano in 1522.

The route of Magellan and Elcano sailed from Seville in the search of a maritime path that linked to East Asia through the Americans and pacific ocean.

In the year 1519 under the command of Ferdinand Magellan, who was Portuguese explorer, It was a Spanish journey that sailed from Seville in the exploration of a maritime path to East Asia through the Americas and across the Pacific Ocean, and in the year 1522, a Spanish navigator Juan Sebastian finished the mission or journey.

sediment layers stop spreading when they reach a barrier or they run out of sedimentary material. lateral spreading is the movement of gently to steeply sloping, saturated soil deposits caused by earthquake-induced liquefaction. i hope this . : )

the precambrian aged rocks could be found in australia. australia is a region that has a lot of ancient civilization history from million years ago. in this region, there are a lot of recognizable fossils buried in its land which is considered a precambrian-aged rocks