The Great Rift Valley is a name given to the continuous geographic trench, approximately 6,000 kilometers (3,700 mi) in length, that runs from Lebanon's Beqa Valley in Asia to Mozambique in South Eastern Africa so there you have it
The Roman government had a republic and some of there principles like electing a leader its still used in the American government today.
Karst Topography is a chemical reaction about the dissolution of layer(s) of soluble bedrock, clearly, carbonate rock like limestone or dolomite. Acidic water erodes the calcium in the bedrock, which is a main constituent of carbonate rocks in creating caverns. First tiny fractures/tunnels form in the rock and yet, with adequate time and dissolution, this acidic erosion can make huge caverns.
