The correct answer to this open question is the following.
Although there are no options attached we can say the following.
The decimal system and the development of the concept of zero are considered the greatest advancements of Indian mathematicians because thos concepts came to give mathematics a whole different meaning and a series of new possibilities to be applied in the field of mathematics with practical applications such as the numeral system, mathematical operations, measures, trade, among others.
Thousands of years before the Europeans could use it, the Indians had already discovered the zero and the decimals. This shows the intelligence and focus of the people in India. These concepts spread all over the Middle East and China before arriving in Europe.
The number system in India can be traced back to the sacred book called "The Vedas," approximately in 1200 BC.
<span>Nationalism helped lead to WWI because it caused conflict
because nationalism is the feeling that one nationality is better than the other</span>
<span>A centrally planned economy oppose these basic economic characteristics- Property owned by private individuals, Market pricing determination by supply and demand forces, encouragement of competition among the companies and providing a wide range of choice to consumer. Therefore, a centrally planned economy believes in restricted type of economy which is mostly governed by government.</span>
The main reason the US Senate rejected the treaty of Versailles was because they feared that US involvement in the League of Nations would mean that American troops would be sent into Europe and settle European disputes.
In the late 20th century, immigrants who moved from former colonies to their former imperial nations tended to settle in metropoles where jobs were available. The correct option among all the options that are given in the question is the second option. People needed money to survive. I hope the answer helps.
