Because he spoke out against the church saying that the earth revolves around the sun. the church believed that we (the earth) was the center of the solar system and that the sun revolved around us.
A. They learned it’s schedule and created irrigation basins to save water
The correct option is A
The Treaty of Non-Aggression between Germany and the Union of Soviet Socialist Republics, colloquially known as the Ribbentrop-Molotov Pact, was signed between Nazi Germany and the Soviet Union by the foreign ministers of these countries, Joachim von Ribbentrop and Vyacheslav Molotov respectively . The pact was signed in Moscow on August 23, 1939, nine days before the beginning of World War 2. The effects of the treaty were diminishing with the growing hostility between both nations until 1941 when the Nazi regime decided to invade the Soviet Union.
The economic change became known as the Industrial Revolution. It was a HUGE turning point for the world.
Francois Holland (the current president) has been named by many as the worst president France has ever had, though it's debatable and it's all based on your opinion, there is no certain answer. It really just depends on what you think on politics and what you think of which president made which decision
