The answer your looking for is society A group of people with common practices, activities, and interests is called a society. hope this helps :)
This was known as the Freedom summer
It was an initiative to get as many African-Americans to vote as possible in the elections in Mississippi. The initiative was organized because they had historically been segregated and were not allowed to vote through various means even when they did have constitutional rights to do so, ever since the civil war.
The third nation created on the Indian subcontinent is Bangladesh.
Bangladesh managed to get its independence in 1971, and formed a provisional government in April the same year in Mujibnagar. The government was in exile afterwards in Calcutta. The independence came after a war with Western Pakistan, and a a genocide over the population in Bangladesh.
The Populist Party was a third party created due to the discontent of farmers against the major political parties (Republican and Democratic parties) because of the Gold Standard issue, and because they felt ignored. This Party is often regarded as a failure because it focused on one issue (to increase the money supply) and tried to gain the support of farmers and workers, but the workers' wants and needs were different than those of the farmers, so the Populist Party didn't had all the support it needed to succeed and ended up being absorbed by the Progressive Party. Although the Populist Party didn't succeed, it helped creating awareness of the farmers conditions, so that the Republican and Democratic parties could also focus on that side of the population.