ANSWER: Prithviraj Chauhan was a Rajput Indian king of the Chauhan dynasty who ruled from 1178 to 1192 CE. He was a ruler of the present day states of Rajasthan, Punjab, Haryana and Delhi of India. He achieved various military successes against several Hindu kingdoms. He also defeated Muhammad of Ghori who was a ruler of Islamic Ghurid Dynasty. The Muhammad of Ghori reverted back with an attack in 1192 CE with the second battle of Tarain where Prithviraj Chauhan was defeated and it laid the foundation of Islamic conquest in India.
Okay, the other answer is wrong. The Electoral College's votes are what decide if you can be president or not. So people who actually became president (like Lincoln) did recieve enough votes from the Electoral College. However, during his own election, Al Gore didn't get enough votes from the Electoral College in the Presidential Election in 2000. That's why he lost the election, even though his popular vote was higher.
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I believe, "Tanks were a fast and reliable means of transporting soldiers" is NOT true.
I don't know what the answer is, but I know for sure that it is not B or C. I believe it is A.