Both civilizations built canals to water crops.
Option 2: <u>They are elected within each party.</u>
At the beginning of each Congress, the parties' members in the Senate choose their own leaders which shall protect their rights and interests on the Senate floor. Since the 1920s, the Republicans and Democrats are the first floor leaders of the U.S.
Depending on which party is in power, one serves as majority leader and the other as minority leader. The majority leader, whose power in the Senate is equal to the power of the Speaker of the House, is responsible to schedule the daily legislative program and, along with the minority leader, it creates the unanimous consent agreements that govern the time for debate.
Estonia, Latvia and Lithuania cannot really trust Russia (the leader of the Commonwealth of Independent States) as Russia forcibly made those states part of the Soviet Union and and did allow for democracy there. That's why they don't want to be part of CIS. They can afford not to be due to their location in Europe, next to western Europe, so then can claim help from western Europe in case of Russian Invasion (unlike Kazakhstan for example).