A - a limited government:)
The term which describes all the actions a nation takes in dealing with other countries of the world is a) foreign affairs. Foreign affairs is often defined as foreign policy, however, although there is a difference. Foreign affairs can be described as "matters having to do with international relations and with the interests of the home country in foreign countries."
The Provisional Government chose to keep Russian troops involved in WW1 after the Russian revolution (1917) because, having made promises to its allies in 1914, believed they should honor them.
This resolution ultimately proved fatal. In June 1917, the Provisional Government ordered an attack on Austria, which failed. After that, people started to turn against the government. By the end of July 1917, the Provisional Government was almost powerless.