Answer:
The October Manifesto, officially "The Manifesto on the Improvement of the State Order", is a document that served as a precursor to the Russian Empire's first Russian Constitution of 1906, which was adopted the following year.
Explanation:
Scientists can determine if oxygen existed in Earth’s Archean atmosphere by looking for oxidized iron in rock. In the beginning, there was only a little to no oxygen in the atmosphere. The oxygen that are being produced by cyanobacteria is only enough for the weathering process. There will only enough oxygen that shall remain in the atmosphere when the rocks at the surface are properly and adequately oxidized. However, as time goes by, evidences said that the amount of oxygen in the Archean atmosphere is actually increasing in a slow steady pace.
Answer:
b- His discovery led to the colonization of the Americans
