Related by context. Frequent words. (Click for all words.) 52 Euphrates 49 Tigris 47 Euphrates river 47 Mesopotamia 47 marshes 46 marshlands 43 rivers 42 Ottoman empire 41 river basin 41 tributaries 41 irrigation canals 41 Shias 40 Mesopotamian 40 Tigris River 40 marshland 40 Euphrates River 40 Sunni 40 waterway 40 Ottomans 40 freshwater 39 Shiites 39 brackish 39 Marshes 39 Ba'ath Party 39 fertile farmland 39 Byzantine Empire 39 palm groves 39 marsh 38 canals 38 watercourse 38 Baathist 38 Nebuchadnezzar 38 wetlands 38 Shi'i 37 Houthis 37 Shi'ite 37 Hammurabi 37 tributary 37 Tigris river 37 Ottoman Empire 37 riparian 37 Shi'ites 37 ancient civilizations 37 Arabian peninsula 37 Assyrians 37 Shi'ite Muslim 37 river valleys 37 headwaters 37 Roman Empire 37 Sunni Arab 37 Baath Party 37 underground aquifers 36 Ottoman 36 nomadic tribes 36 Syria 36 Shiism 36 Shiite Muslims 36 peshmerga 36 caliph 36 Constantinople 36 antiquity 36 lakes 36 Houthi rebels 36 Mediterranean basin 36 Arabs 36 #BC [003] 35 Mediterranean Sea 35 Sunni Arabs 35 Dead Sea 35 River basin 35 river 35 aqueduct 35 Salafist 35 Mississippi River 35 Hashemite Kingdom 35 Chaldeans 35 Hebrew Bible 35 Shiite 35 Persians 35 millennium BC 35 civilizations 35 Yazoo River 35 Assyrian 34 estuaries 34 coastal wetlands 34 Babylonian 34 swamps 34 Shiite militiamen 34 Lake Okeechobee 34 ancient 34 Sunni insurgency 34 Indus river 34 Nineveh 34 Nile 34 cattails 34 farmlands 34 ummah 34 Sumerian 34 mangrove forests 34 insurgent bastion 34 wetland