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The responsibilities and privileges of betrothal vary. In most cultures, the betrothed couple is expected to spend much time together, learning about each other. In some historical cultures (including colonial North America), the betrothal was essentially a trial marriage, with marriage only being required in cases of conception of a child.[citation needed] Almost all cultures are loosening restrictions against physical contact between partners, even in cultures that normally had strong prohibitions against it. The betrothal period was also considered to be a preparatory time, in which the groom built a house, started a business or otherwise proved his readiness to enter adult society.[citation needed]