Which is a chemical reaction? wood burning ice melting salt dissolving water vaporizing

In 1819, what did the united states obtain from spain for $5 million?

Analyze how napoleon used a coup d'etat to establish absolute rule.

Viktor is a russian university student. he wants to go to new york for a semester to study and improve his english. what should he do before he buys his plane ticket? a. buy a map of new york city b. pay for his program in new york c. apply for a us visa d. apply for a policy waiver