You'll have to post more information so that we can advise:
1. How long did you want to visit?
2. List of documents which you submitted for yourself + your Canadian host
3. Have you traveled abroad earlier? If yes, to which countries + for how long + purpose of those visits
4. What reasons can you prove to show that you must return to India? For example: Employment/business + property ownership/rent agreement + dependent family + financial investments, etc?
'Travel History' is often a generic refusal reason while the actual refusal could be due to other reasons
I applied for a month.
2. My sister given invited me. For my cousin wedding. She showed in declaration that she take all responsibility.
3. Attach leave letter of myself and my husband.
4. Salary slip of both of us.
5. Bank statement which show total 18000 CAD.
6. Investment FD', mutual funds, nsc, lic which shows 20000CAD.
7. Wedding card
8. Tax return of last 3 year
9. My sister and her husband detail like pr card, health card, tax returns, annual income, employment letter
10. We do not have any travel history