No, it is not true that the development of armies, navies, and weapons is called imperialism. This would be called "nationalism". Imperialism refers to when countries take over and dominate other countries.
When Greek Won The Persian War
What were the effects of the Napoleonic Wars?<span>NAPOLEONIC WARS, IMPACT ON THE U.S. ECONOMY (ISSUE) The French Revolution (1789–1793) was a watershed in European history. It destroyed the French monarchy and established a republic, but it also divided France and threw much of Europe into turmoil.</span>
The first nation to claim land in the Americas was Spain, followed by Portugal. In fact, in 1494 they had an agreement to split Americas among them and it seemed as if Spain would be in control of almost the whole continent.