How might language to divide people and prevent them from forming their own country?

Explanation:

If you have a group of people who want to form a country, and they speak two different languages-assuming there's not a strong current of bilingualism-they won't be able to communicate well with each other, and have a difficult time sitting down and working out how to start a country.

a social contract.

"a social contract is an agreement between citizens and their leader where the citizens give up certain freedoms in exchange for protection. the constitution of the united states is an example of a social contract."

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.