Easy pasta with tuna and tomato

2tbsp oil
1 onion,chopped
2 cloves garlic,chopped
400g can tomatoes with herbs
1/2 tsp chilli powder
1tsp sugar
500g pack pasta bows
100g can tuna,drained

Heat the oil in a pan,add the onion and cook for a couple of min.Stir in the garlic,tomatoes,chilli,and sugar.Season and bring to the boil.Stir,then reduce the heat and simmer for 5 min.Meanwhile cook the pasta.Flake the tuna into the sauce and heat through.Drain the pasta,return to the pan and add the sauce.Serve with garlic bread.