Why did old rivals britain and france form an alliance during world war i?

Which of these innovations led to increased production in american factories in the early 1800s? a. the use of interchangeable parts b. the construction of canals c. the invention of the mechanical reaper d. the availability of electricity

How many countries have signed the kyoto protocol?

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