US student loans cannot be used for study abroad (exception: a study abroad program through your US university whereby you pay your US school's tuition). You cannot borrow from any bank: students typically have no credit history, assets, etc, and you certainly have no job in US. Above all, you are leaving the country for an extended period & cannot borrow! You cannot borrow in a foreign country - you are not a legal resident, student visas are temporary. You have no job, no assets, no credit history in the foreign country.
Business degrees are a glut on most markets, and you cannot expect financial aid from your foreign university, especially not for business, and usually not for any grad school anyway.
You (& your parents) have to pay for everything. Proof of sufficient funds for all school + living expenses + return transportation to country of citizenship required to apply for student visa. No money = no visa.