Because it was mainly Europe that was Christian. Asia was for example mostly Buddhist, Confucian, and Hindu. The Middle East and Northern Africa was Islamic. The rest of the world was influenced by Europe and it’s Christianity.
If no canidate receives a majority, the House of Representatives elects the president
There are 27 grievances in total if I remember correctly. Some of them include: the unfair taxes on goods, the British Parliament passed laws that were deemed unfair, the colonists had no say in the Parliament, the colonists were not allowed to sell any goods to any other country other than Britain.
The Olive Branch petition, was an attempt to give colonists some rights while staying loyal to the British crown.
Learned from there mistakes and try to not repeat the same mistakes they've made