European nations give away land to people willing to settle and work in their colonies, because they have to pay the people to live there, as many of their civilians didn't want to go, for there were no profit in going "Why would we go to an unkonwn place for no profit". The land allowed companies to send settlers there, as people went there to farm or get rich quickly
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Considering the gap in ages, I think parenting three generations were tough. They have different influences and understanding of society. <span>Baby boomers became more adaptive of the situation through experience. </span><span>As parents, they have learned much of the individualities both similarities and differences through experience. </span>
<span>Technology became a bridge for the three generations. Facebook had become successful of getting the Baby Boomers. </span><span>On a national level, the use of common websites is an ordinary routine for the three. </span>
The major obstacle to Islamic expansion in India was the presence of the Rajputs, a traditional patrilineal clan/warrior ruling class.
520,000,000 is the answer.