Ok, 100 years from now
- One world government, Brexit and Trump are just minor inevitable backlashes against the sheer speed of globalisation, just as tribes banded to form city states and city states banded to form nations, the EU, NAFTA, African Union and USANASUR will merge. Increased power of global mega corporations like Google, Amazon and Facebook will break down national barriers
- Single culture, in order to achieve the above, cultural differences will have disipated, the influence of Hollywood, TV and the internet will result in the "Americanisation" of everywhere, the world will dress and act the same as youngsters in the first world today
- Urbanisation, the vast majority of humans will live in cities, rapid population growth and internal migration in India and China lead to many Asian cities resembling cyberpunk dystopias
- End of war, with the global government in place there will be no wars between states or civil wars, terrorism will still be a menace though as nationalists and religious extremists are increasingly marginalised
- Fall of religion, they'll still be around in 100 years, but seriously watered down and not take as seriously, churches, temples and mosques will become tourist attractions more than anything else, technological progress will render religion's "miracles" as trivial
- Economy, most nations have now stricken the right balance of capitalism and socialism and the universal basic income being implemented worldwide. Today's major corporations such as Google, Apple, Amazon, Microsoft, Samsung, Sony, Toyota, Nike, Coca-Cola, McDonalds and Unilever have become global fixtures with huge political influence. Some have a seat in the UN/global government.
- Languages will still differ worldwide, but everyone will speak English either as a first or second language
- Space, slow progress made, Mars landing around 2060, small colony by 2100