The invention of the zero made mathematics A easier to spell
B easier to write
C hard to add
D hard to write


Answer 1

The invention of the zero made mathematics easier to write. The correct option is b.

What is mathematics?

Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics with the major subdisciplines of number theory, algebra, geometry, and analysis, respectively.

There is no consensus among mathematicians about a common definition for their academic discipline. The most mathematical activity involves the discovery of properties of abstract objects and the use of pure reason to prove them. These objects consist of either abstraction from nature or in modern mathematics entities that are stipulated to have certain properties, called axioms. Proof consists of a succession of applications of deductive rules to already established results.

Mathematics is essential in the natural sciences, engineering, medicine, finance, computer science and social sciences.

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Answer 2
Answer: B easier to write
With the introduction of the zero we can now write very big or very smallnumber with no need to introduce new symbols.
For example the Egyptians had symbols for 100, 1000, 10,000 etc.
we only need 2 symbols!!!

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My answer is the iron curtain


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Which reason for entering World War I exemplifies Wilson's goal of moral diplomacy? to improve the American economy by trading in weapons and ammunitions to support other democratic nations, especially after Russia dropped out of the war to prevent American ships from being attacked to punish the Germans for their attempted alliance with Mexico


Moral diplomacy is a form of diplomacy proposed by US President Woodrow Wilson in his 1912 election. Moral diplomacy is the system in which support is given only to countries whose moral beliefs are analogous to that of the nation.

Final answer:

The aspect of World War I that represents Wilson's moral diplomacy is the U.S.'s decision to support other democracies, especially after Russia's exit, reflecting the aim to promote democracy and peace.


The reason for entering World War I that best exemplifies President Wilson's goal of moral diplomacy is to support other democratic nations, especially after Russia dropped out of the war. Wilson's idea of moral diplomacy was rooted in promoting democracy and peace globally. He believed in supporting nations that shared democratic values, reinforcing positive attitudes towards the United States. Hence, stepping in after Russia's withdrawal from the war represented this goal - helping fellow democracies defeat autocratic regimes, thus spreading democratic values and maintaining global peace.

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What was the primary reason the U.S. fought in Vietnam? It fought again communist control. The U.S. wanted to make Vietnam a colony. Vietnam wanted to be a colony of the Soviet Union. Japan wanted to control Vietnam.



The primary reason for why the US sent troops to Vietnam was to contain communism and stop its spread. This was part of the Domino theory.

What is xenophobia? A) fear of socialists
B) fear of foreigners
C) fear of communists
D) fear of isolationism


Xenophobia is the fear, prejudice, or hatred of foreigners or people from different cultures, ethnicities, or nationalities. Therefore, option B is correct.

What is xenophobia?

Xenophobia is an irrational fear or hatred of people who are perceived to be strangers or foreigners, often based on their race, ethnicity, national origin, or religion.

This fear or hatred can manifest itself in various ways, including discrimination, prejudice, bigotry, or even violence towards individuals or groups who are perceived as different or "other."

Xenophobia can be both an individual and a societal problem, and it often stems from ignorance, misinformation, or lack of exposure to diverse cultures and perspectives.

It is important to recognize and address xenophobia to promote tolerance, acceptance, and respect for diversity.

Xenophobia can have serious negative consequences, such as social exclusion, discrimination, and even violence. It is important to recognize and challenge xenophobia wherever it appears, and to promote tolerance, empathy, and understanding towards people from diverse backgrounds.

Learn more about xenophobia here:


B is a hundred percent correct, and was undoubtedly prominent throughout the 20th century