You are somewhat on the right path here. At the end of the day we have nobody to blame by ourselves. To blame colonizers for colonizing is like blaming water for being wet. For example England is a teeny tiny island and if you remove the non-developed area that leaves it with a measly 11000 km², considering the lack of natural resources and the harsh living environment you can see why they started invading the world starting from their neighbors.
At some point everyone realizes this and learns from their mistakes in the history and start the change. What we see in the New World Order today with new organizations like SCO and BRICS is the result of those who realized this decades ago and started the change.
England, the land of Anglo-Saxons, i.e. immigrants from Northern Germany and Southern Scandinavia conquered the world. England, such a tiny island, who could imagine.
Okay, my point here is, England was a conqueror but there is a thing that I want you to think about. Every country will be a conqueror if it can to conquer, absolutely every country. What does conqueror want? To expand, to have more lands and to become from tiny island into a big empire.
But there are two types of conquerors:
1. One is technologically/culturally advanced with manpower
2. Second is not technologically/culturally advanced but has manpower.
Now, to explain what I want to say, let's take two modern countries for example:
1. Denmark - Is technologically/culturally advanced, has manpower
2. North Korea - Only has manpower, otherwise this country is brutal.
Let's assume that other countries are typical average countries, aren't developed, have some problems, etc. Also, let's assume that these countries want to conquer other countries.
1. Denmark was to conquer your country. If you let Denmark to conquer it and join it, without any war, then Denmark will share it's technology, education and achievements with you, merge with you under its own leadership and you, that was a bad/average country before, now becomes one of the most successful one as a part of Denmark. If you resist, then definitely it will abandon you, will try to enslave you and rob you.
2. North Korea wants to conquer your country. They are brutal, they don't have educational and technological achievements, they can bring nothing to your country by conquering because they don't have anything for them. If you let them to conquer you, you'll become even worse than you were before. If you don't let them to conquer you, then they'll murder you and enslave you, abandon you, destroy you and everything. They can't steal anything because they lack technological progress.
So, my point is: There is Russia/China and there is US/EU. If you visit these countries, you'll see that people live a wealthy lifestyle, have better quality of life, things go better. If you visit Russia/China, you'll see that in these countries, you have to work a lot and are only getting paid to eat, also, because of corruption and nepotism, your talent wanishes.
Now there is a Brazil, India, South Africa. Let's be honest and say that one of these have to conquer you, you have no other choice because two superpowers want you. If you willingly join Russia/China alliance, what will be benefit for you? Will your quality of life improve? No, because these countries can't take care of their own citizens, so they won't be able to take care of you. But if you willingly join US/EU, you'll gain access to tremendous education, experience, better quality of life, more possibilities and so on.
The British Empire brought modern technology, education and culture. While it's true that it destroyed a lot of lives, it's also true that Britain was advanced and could bring advancement and progress in countries that were willing to accept them. That's all I wanted to say from the very beginning.
Final questions:
Does EU give you asylum protection?
Does EU give you free healthcare even if you are an asylum/refugee?
Does EU give you free high quality education?
Does EU give you free money and housing when you claim an asylum?
Do European taxpayers pay for all of these?
What we get in return? Those who got asylum, our free money, free healthcare and free education, are raping women and children, are killing people in the street, are robbing houses, are shoplifting and so on.
They take 470,000 troops and completely destroy 6 countries in 20 years and cause the dislocation of tens of millions of people. Some of which find their way to Europe seeking asylum. Out of those who survive the NATO bombings, many die trying to get into Europe. Specially these days that some EU countries like UK are sinking their ships to get rid of them. A small portion that enter Europe are treated harshly and their belongings are confiscated to cover the "cost of their asylum" (eg. the Jewelry Law in Denmark that lets the police seize anything that costs more than a grand).
Okay, Europe is evil. Why do they try to claim asylum in Europe?The UK is sinking their ships to get rid of them, yes, I have heard that but why do they want to go in the UK? Okay, years ago, asylum claimers were treated much better, Sweden was even giving them free housing but what did Sweden got in return? Increased crime, rape, murder. Does the UK want increased crime/rape/murder? No, that's why they are doing that. I know it's cruel but so is when you murder someone's daughter. Refugees from those countries are doing massacres in Europe.