Grammar doubts

0(1) This seems to be a perennial problem, that we cannot live without bloodshed, without going after our enemies.02br
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00Comma usage, please check.02br
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00(2) But the basic drive is to get food and to get the mating available. And it is in this here that Jainas perceive what kinds of passions are working.02br
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00Can "And it is in this here" be rephrased fro clarity? Please rephrase.02br
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00(3) And it is in this way that Jainism began, with a large group of mendicants who decided, who left the household life, left all the activities, subsisted on the least possible, amount needed for food and water and shelter, and led a very frugal life, sustained by the laypeople who were able to support them.02br
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00Do we need comma before amount? Please advise.02br
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00(4) But nowadays these are asked and they must perforce find answers to that.02br
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00Is the usage "perforce find" ok? Please check.02br
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00(5) This is the tale of an elephant, who, in his very next rebirth, was reborn as Prince Mega and become an eminent Jaina monk under Mahavira. And Mahavira is telling the past story of this particular man:02br
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00become or became? Please advise.0-