প্রথম সকল শিল্পের মূল হল – InterviewSolution

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1.	প্রথম সকল শিল্পের মূল হল
Answer» স্পাত শিল্পকে সকল শিল্পের মেরুদন্ড বলা হয় কেন? লৌহ ও ইস্পাত শিল্প হল ধাতব খনিজ কাঁচামাল ভিত্তিক প্রাথমিক শিল্প। ... এই সমস্ত কারণে লৌহ ইস্পাত শিল্পকে সকল শিল্পের মূল বা সকল শিল্পের জননী বা সকল শিল্পের মেরুদন্ড বা যন্ত্রসভ্যতার মেরুদন্ড বলা হয়।

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