He was commissioned by the Portuguese king to find a maritime route to the East. His success in doing so proved to be one of the more instrumental moments in the history of navigation.
When einstein came and changed the world
A plain is a landform that is almost always flat. It is like a small valley.
The New Deal was a series of programs and projects instituted during the Great Depression by President Franklin D. Roosevelt that aimed to restore prosperity to Americans. When Roosevelt took office in 1933, he acted swiftly to stabilize the economy and provide jobs and relief to those who were suffering. Credits to history channel
I believe the answer is B