By Christian laws I suppose you mean 10 commandments? The 10 commandments are not in the Bible they are in the old testaments they were given to Moses and are a joke. Canada I think follows Common Law from UK and Ten Commandments have zero bearing on it as they are bullshit. Most Laws in Judaism and Islam come from the code of Hammurabi.
Christianity itself is not a religion its a fraud, Jesus Christ never existed he is a fabrication of the Romans and plagiarism of Lord Shiva and Horus of Egypt among many others (do some research on it its very interesting). So Christianity did not bring any laws.
In Canada and any other civilised nation laws are not made by any religion they are made by secular thought and reasoning, the reason why we do not have a death penalty in Canada anymore is because of detailed research which all came to the same conclusion that death penalty actually increases violent crimes in society such as rape and murder. Its called the brutality effect (search it). It is unfortunate that in USA the 10 commandments are written in their constitution and USA is a religion Jewish Christian country, unlike Canada. Its very hard to be Atheist in USA. I do not compare USA with Canada or Europe. Canada did not join the Iraq war as well.
As for your argument that Canada enslaved the natives therefore we should not live in Canada. The Prime Minister of Canada officially recognized the crimes of Canadian government against natives and apologized for it. All these crimes were committed on the basis of religion and by the Church they say natives as less than human and called them Heathens because they were not Christian, therefore they decided to take the children of natives away and put them in church run schools called residential schools and all the brutality took place in those schools by priest, because they thought that by making them christian they will become humans. Today Canada is not based on Christianity or any religion, the last residential school closed in 1997 i think.
Today Natives in Canada have more benefits than any people in world, they can get passport of any North American country they want just by applying for it, regardless of where they were born, only they can run Casinos and earn billions of dollars, many rivers lakes and mountains are off limites to non Natives, only natives allowed to fish in rivers with nets, everyone else even Canadian citizen have to use rods and catch one fish at at time and the list goes on and on, Natives living like in heaven. They will never in their worst nightmare decide to go live in MiddleEast.
If you follow the rules of Islam that means you can commit spousal rape, sex slavery, chop peoples limbs of for minor theft, 4 witness for woman to prove rape otherwise she will be beheaded for false accusation, DNA evidence not accepted in rape. You can marry your son's wife (Muhammad married his adopted son's divorced wife). You can marry your first cousin, (30% of newborn treated of genetic disorders in UK are born to Pakistani parents even though they are 3% of total new borns in UK). Death penalty if a Muslim decides to become christian. Exploitation of women. Child marriage etc... The problem is those are all absolute morals meaning they will not change until end of time in Muslim communities but in liberal societies we can use our brain and change laws that are unfair to be more humane, that is why religion is so dangerous. I do not agree with Islamic/Jewish/US/Saudi/Irani/ISIS laws, societies make and update laws based on logic and reasoning.