Which of the following landforms was most likely to limit the interaction between two prehistoric groups? 1. forest 2. lakes 3. mountains 4. rivers

hello,

i'm not so sure but i hope this in anyway.

the president of russia is head of state, and of a multi-party system with executive power exercised by the government, headed by the prime minister, who is appointed by the president with the parliament's approval.

hope this : )