He says that the US's weapon stash consists of democracy. It can imply that this is the reason the US fights wars is to promote and establish democracies.
The Native Americans resented and resisted the colonists' attempts to change them. Their refusal to conform to European culture angered the colonists and hostilities soon broke out between the two groups.
The Age of Exploration was the 15th-17th century where the European ships travel to different parts of the word to search for new trading route, wealth and knowledge.
Big and heavy army to protect them
Coal, I think that's right it seems to be the only one that makes sense