Russia, Armenia, Azerbaijan, and Georgia
D. It tripled, mostly due to people moving in from other places
Explanation: in 1850 the population of Texas was 212,592. In 1860 the population shot up to 604,215
Initiative, referendum, and recall.
The initiative is the process that enables citizens to bypass their state legislature by placing proposed statutes , and in some states, constitutional amendments.
Referendum is a measure that appears on the ballot.There is a legislative referendum where the legislature refers a measure to the voters for their approval, and then there is a popular referendum, where the measure appears on the ballot as a result of voter petition drive.
Recall is a procedure that allows citizens to remove and replace a public official before the end of a term of office.