I will go with religion because Religion to me have been the oldest of all the option given. It is the only thing that connect the world.
it's also known as the Connecticut Compromise. this Compromise was an agreement when the large and small states could not come to a conclusion. the small states wanted equal representation in Congress while the larger states wanted it to be done by population. this Compromise was split Congress into two house. the Senate (for the smaller states) was equal representation each state got 2 senators. while the House of Representation (for the larger states) was represented by population.
The partition of India in 1974 was mainly due because of religious matters and of the high population of Muslims, Hindus ,and Sikhs in the area.Bangladesh and Pakistan became a muslim-majority country and India became a Sikh and hindu-majority Country
also Hindus and Sikhs got a long more than Muslims because of the same language and Muslims were used to Urdu and Arabic as their language and the Hindus and Sikhs adopted as a language called Hindi as there main language
On April 12, 1961, aboard the spacecraft Vostok 1, Soviet cosmonaut Yuri Alekseyevich Gagarin becomes the first human being to travel into space. During the flight, the 27-year-old test pilot and industrial technician also became the first man to orbit the planet, a feat accomplished by his space capsule in 89 minutes.
Hope this helps