what are the external force which can change Indian nifty moment ?

Hai Experts!

I need to know what are the external force which can change Indian Nifty moment ?

I heard US market is the one How ? whether -ve trend in US market results same in India ? what is SGX nifty ? whats the relationship with Indian Nifty ?

Does -ve in Dow jones , S&P 500 , Nasdaq affect indian Nifty ?

not only the Developed markets effect the nifty
its also dependent on the FII cash flow
any natural calamity , terrorist attack, bad or negative speech by Indian ministers
and not to forget any downgrade by ratings companies

what do you mean " not to forget any downgrade by ratings companies " ???

s&p, moodys etc are rating companies which rate the country depending upon its prospects.
downgrade of that will cause less inflows towards that country and hence the equities (this causes kneejerk reaction so said not to forget them)

Dear Trade Beginner Sir

News based study is very dificult , steps
1. News Collection
2. News Analysis
3. In News Analysis Good and Bad news strength caluculation
4. Market Support and Resistence Prediction based on News based is very defecult

Ex: Eroupe news, Asia News , IIP DATA, INFILATION , EXPORTS IMPORTS, US JOBS DATA,
FEDARAL RESERVE BANK RATE , Indian reserve bank polcies, Elections , China Exports
Oil prices, Etc..........

But learn technical analysis you will do right analysis through TA

All the Best Sir