Well it depends what they are in need of. They most commonly would want more land for their country to build and farm on. They may want land with fertile soil for farming. They may want the land because of it's geography, for example, for simple trade routes leading to and from the areas around north America (Canada, Mexico) etc.
<span>1. By water across the Mediterranean,
2. by land to the red sea or Persian gulf,
3. by water to India and China</span>
Britain. Thus began the War of 1812 (a bit of a historical curiosity, since the United States declared the war and then waited for Britain to come and fight rather than immediately invading or attacking).
