Answer:
The correct answer here is D.
Explanation:
In order to effectively manage the federal government the President has the ability and the right to issue directives that are called executive orders. These orders are based on the Article II of the US Constitution which grants the president power, that is enforcement and executive power to be able to best direct the government or to best enforce the already passed laws.
I think it was the decimal system and concept of zero
The reason why soviet union support Fidel Castro was:
<span>Castro announced that he would sponsor communist governments in other parts of the Caribbean.
The support happened during the cold war because the Soviet Union was really worried about their position since United States managed to obtain the support of almost the entire western Europe</span>
I think he was in the aasp with Rosa Parks but im not sure