Question

i want a topic on marathi for my speech

Answer 1

I would suggest below topics and some high-level points that you should include in your speech

Shivaji Maharaj: 
     a. Write about history and harassment before Shivaji Maharaj was born
     b. Write about first few years of Shivaji maharaj such as how his father was serving nijam, how nijam captured him and send him away etc. 
    c. Shivaji's first win - Torna fort
    d. Brief summary of some of the major battles that Shivaji faught and won
    e. Write about his Rajyabhishek
    f. Ending statement which includes how Shivaji changed face of Maharahstra while he was alive and base that he paved for coming generations

Answer 2

There can be many topics. One such topic can be "Real to Virtual"
Explain how today's generation is involved more into virtual world from real world. From facebook, likes, whatsapp, telegram, instagram to video games like shooting games, racing games or pokemonGo, etc etc