The United States Of America
There are several types of visas for the United States, including tourist visas (B-1/B-2), work visas (H-1B, L-1, etc.), student visas (F-1), and immigrant visas (family-sponsored, employment-based, diversity visa, etc.). You need determine which visa category appropriate for your purpose of travel.
Remember that each U.S. embassy or consulate may have specific procedures and requirements, so it's crucial to consult their website and follow their guidelines. Additionally, immigration policies and procedures can change, so it's essential to stay updated through official channels.