Well, for a starter I'd say that proper education ads roughly 5-10-15 IQ points depending on how gifted someone is, the same goes for proper nutrition.
But genetics play a large factor and there's no denying that.
It's just the way things are.
Before the 18th century the "third world" had a significantly higher population than Europe, not to mention that the third world is larger, which means that it had more resources. Of course it's easy to be more productive than Europe even on a per capita basis.
And even then, a lot of Europe's development came down to a weird hybridization of Oriental traditions and Classical thought. (Not to mention the material conditions, especially those in England during the 1600s.)
Also remember that you're living in a world that uses the West as a model. So of course you hear a lot about the west being the best. But in fact, the west wasn't the first to do a ton of useful things.
Compasses, the printing press (both block and movable type), gunpowder, rifles, cannons, examination based bureaucracy and astronomy were all developed in the Orient before we either developed them independently or learned it through trade.
The west wasn't the only part of the world that sent out explorers. China was also at one point in its history interested in the outside world and sent out fleets that reached Madagascar and Ethiopia, establishing long lasting Chinese communities in Indonesia and the rest of Asia.
It's just that China was never pressured by economic necessity to go out and search for raw materials or human capital. (This is also why the British started selling opium, to create and artificial demand for a product the Chinese would have to pay in silver, so that the flow of precious metals would change.)
>I want to believe that all human beings are born equal
They aren't. We all have the same human rights, but we don't have the same genetic heritage (with their boons and banes)
You don't have to love every race. But not loving everyone doesn't mean hating everyone.
I for example have nothing but scorn for our biggest minority (romani), wish them nothing but harm, but that doesn't mean I can't admire the cultures of other races in a respectful manner.
The biggest point is: Race shouldn't take up most of your time. Same goes for politics. There's not reason to be hung up on the topic all the time. Just do what every normal person does, get a bit mad when you see some good for nothing trash and then forget about it 5 minutes later.
A lot of "racial behaviour" comes down to culture and class. What I hate in a romani or a black I hate in my own countrymen too, because it's shit tier prole behaviour, even if you're 2 metres tall with blonde hair and blue eyes.
You should be wary of someone's culture and behaviour instead of race first and foremost. (Of course I'm not saying there's no correlation, but I guess what I'm trying to say is, you hate them not because they're a few shades, darker, but because they act like unbearable retards who deserve a beating.)