Biological warfare (mustard gas)
<span>C. 23
There were 23 people who were executed that are innocent of convicted crimes since 1900.</span>
Rivers supplied not only water for the colonist, but transportation which also led to trade. Also a lot of wild life are around river which gave them food also weather it be fish in the rivers or animals that come to the river to drink. So rivers provided water, transportation, and food.
The correct answer is letter A.
The condition on the illness of a president can be challenged by the national congress, this because it is his duty to supervise the conditions of a president to govern.
In addition, it is the exclusive competence of Congress, among other duties: to resolve on international treaties and agreements that incur expenses to national patrimony; authorize the President of the Republic to declare war and to celebrate peace; approve or suspend the state of defense, federal intervention and state of siege; judge annually the accounts provided by the President of the Republic and evaluate the reports on the execution of the government plans; supervise and control the acts of the Executive Branch; analyze the concessions of radio and TV stations; plebiscites.