First off, it was because of manifest destiny- the dream to acquire all land from the Pacific Ocean to the Atlantic Ocean.
Also, the south wanted new territories because they needed new farmlands; tobacco heavily stressed the soil
Alaska
philipines
Before the war Hawaii was annexed. After the war Guam and Puerto Rico were annexed which remain Territories and the Philippines which was granted independence after WW2.
Mexico.
They tried to buy the land as soon as Mexico became independent from Spain. Mexico however, refused. Only by the means of war could the U.S. acquire such territories.
Alaska
They still hold Guam and Puerto Rico as US Territories.
philipines
They still hold Guam and Puerto Rico as US Territories.
The Revolutionary War
Before the war Hawaii was annexed. After the war Guam and Puerto Rico were annexed which remain Territories and the Philippines which was granted independence after WW2.
The US purchased Louisiana from France, to acquire the control of the port of New Orleans, of the River Mississippi and the French territories west of that river, thus avoiding they could fall in British hands.
Naval bases
Naval bases
Naval bases
in the year 1848
Nothing: the US took those territories by the means of war.