Loyalty to one’s country or to people with a common language, religion, and history is known as
militarism.
nationalism.
mobilization.
conscription.

I believe the answer is: nationalism

The concept of nationalism promote the love of one own's country, and put the the things that benefited our own country first before we pay attention to the benefit of other country. This often used as a political ideology by parties in order to obtain support from the voters during the election.

in his book, the riddle of the rosetta stone, james giblin talks about how there was a young british polymath and physician named thomas young who made a lot of advances on the deciphering of the rosetta stone. he says that even though young made a lot of mistakes because he was working under false assumptions, he also made huge contributions like deciphering three out of the seven symbols (more than anyone else before him). young published his findings and continued his good work but he wasn't able to progress much further due to some unfavorable situations, he still laid the basis for many other scholars and of course for the man who has been generally known to have deciphered it, jean-françois champollion