The global community invest lots of money into the military. The 2.5 billion dollar budget for sending the curiosity rover to mars is less than the worldwide military expenditure for 13 hours.
While searching into nations military expenditure, there are 2 key factors that offer an accurate scale on how much is being spent. the precise amount of money allotted and it’s relativity to the countries GDP. At the mention of military budgets everyone knows America as the big spenders.