Most countries have breakfast foods that are associated with them. For instance, if you think of Australia, you think of Vegemite on toast. Vegemite is a yeast byproduct left over from beer making and flavored with vegetables and spices. I can tell you from experience, that Vegemite can take a bit to get used to.
In Japan, you might have rice with green tea, or rice with boiled fish and miso. Either is a great flavorful breakfast. On the other hand, in Myanmar, you might be served a fish broth with rice noodles and flavored with lemongrass, garlic, ginger, and onions. This is sometimes served with fried fish cakes. If you decide to have breakfast in Malaysia, you might have a plate with coconut rice, surrounded by anchovies, peanuts, a boiled egg, and hot sauce.
Head over to the Philippines for rice with some sort of meat for breakfast. They like rice and hot dogs, or rice and dried beef, or rice and spam or rice and meat. In Pakistan, you'll enjoy a fried unleavened bread served with a chickpea stew, and a surgery treat such as a slice of tahini loaf.
If you have breakfast in Europe, many countries offer bread with butter, jams, or cheese. Some offer yogurt and muesli or granola, or eggs to go with the bread. When I visit Europe, I always go for bread, cheese, and tea for breakfast as I enjoy European breads.
On the other hand, breakfast in England, Ireland, and Scotland tend to either offer porridge aka oatmeal, or eggs fried in lots of grease, served with canned baked beans, toast, fried tomatoes, mushrooms, and sausages. In the Middle East, you might have a flat bread with a cheese like Feta, tomatoes, cucumbers, olives, and possibly a local sausage.
In many Central and South American countries, you might have some sort of bread or corn tortilla with eggs, cheese, and beans. I had the bread, eggs, cheese, and beans when I stayed at a hotel in Costa Rica. It was great and I loved it. Foods made out of corn were so much better for the most part than anything I found at a local bakery.
There are also countries which offer a bread that is stuffed, or similar to Danish pastries, or croissants to enjoy with fruit and a strong cup of coffee or tea. So where ever, people have breakfast, it is usually something that is solid and delicious. Let me know what you think, I'd love to hear. Have a great day.