Showing cause and result

        They had to put off the exam because the teacher was ill.
        There was an awful traffic jam because it was snowing.
        Since/As the teacher was ill, they had to put off the exam.
        (Followed by a noun)
        There was an awful traffic jam because of the snow.
        He couldn´t go on holiday last summer due to his brother´s illness.
        The company is expanding so they will need staff.
        The company is expanding abroad, therefore/consequently he will have to travel quite often.
        As a result of his excellent marks, he has been given a prize.