Answer:
He developed mathematical principles.
Explanation:
During the peak of his career, he developed the foundation of principles that we used in modern day geometry. His findings also contributed in the development of Geometrical analysis and calculus.
Along with these mathematical principles, he is also known as the founder of the Rationalist school of thought which advocated for logical reasoning to solve problems rather then relying on something mythical.
Answer:
B. a person's point of view about something.
Explanation:
An attitude is a person's point of view about something. The statement " I like southwest air" is an example of attitude
The correct answer is - lumber.
The lumber is both renewable and inexpensive resource, and it also can be found in every continent, apart from Antarctica. Still, the usage of lumber has to be managed carefully and with nice planning, because so far, the usage of lumber is surpassing the trees being planted to replace them, and that led to the total destruction of lots of forests throughout the world. This is a very easy thing to do, so the authorities have to force the companies in this industry to replant the areas from where the trees are cut, thus to have a proper usage of it, stable reserves, and protect the environment.
The correct answer to this open question is the following.
Although there are no options for this question, we can answer the following.
Even though the rule of the tsar ended in Russia in 1917, the country continued to be an empire or kingdom when Vladimir Lenin came to power.
With the advent of the Russian Revolution in 1917, the Romanov dynasty in Russia ended after hundreds of imperialistic years. Russian leader Vladimir Lenin led the Bolsheviks into the fight and finally ended the kingdom of Russia after many years of oppression and poverty. Lenin and the Bolsheviks set the foundation of what years later would become the traditional Communist Party in the Soviet Union.
