<span>One of the most important contribution made by Indian mathematicians was the introduction of decimal system as well as the invention of zero. Aryabhata worked on the place value system using letters to signify numbers and stating qualities. Brahmagupta introduced the concept of zero to mathematics which stood for “nothing”.</span>
<span>Important kings like Clovis, Charlemagne, and Otto i affected European unity by creating </span>create an organized empire and spreading Christianity.
The Kings promoted unity in Europe, promoted education and spread Christianity throughout their lands which prevented the spread of Islam
Answer: Technology developed in systems of interdependent parts.
Explanation: The human being, endowed with his intelligence, sought ways throughout history to overcome the obstacles imposed by nature. Thus, it was developing and inventing technological instruments in order to overcome difficulties. We may say that necessity is the mother of great technological inventions.
The reason why there are no nation states with pure free market economies (capitalist economies) is because this would most likely cause corruption in the upper 10% and damage the other 90%. All land owners, business owners, etc. can charge as much as they want for their products, pay their employees as little (or as much) as they want, and get to decide how much and of what is made. This is because in a free market economy, there is very little to no government intervention, meaning little to no regulations on the economy, meaning the rich and wealthy can control how the economy is run.
