Question

what are the things used by sumerian civilization ​

Answer 1

Explanation:

In what the Greeks later called Mesopotamia, Sumerians invented new technologies and perfected the large-scale use of existing ones.

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Contents

Mass-Produced Pottery.

Writing.

Hydraulic Engineering.

The Chariot.

The Plow.

Textile Mills.

Mass-Produced Bricks.

Metallurgy.

Answer 2

Answer:

Attributes:

• Invisible except to City Centers, Encampments, Destroyers, other naval raiders, and units in an adjacent tile.
• Can perform Coastal Raids.
• Cannot attack in melee.
• Ignores enemy zone of control.

Strategy

Unlike the real world, the Submarine in Civilization VI has a rather limited scope of use, and will often be ignored throughout the game for the following reasons:

Overall, naval warfare does not carry such importance as it did in Civilization V. The fact that cities now can be settled inland and still reap the benefits of being coastal cities, together with the value of water tiles compared to land tiles, makes wresting control of the sea low on the priority list. Unless the map is heavily dominated by water, most of the time you can get by without owning a single ship......

The first naval raider unit, the Privateer, is actually pretty similar to its naval ranged counterpart, the Frigate, since they have very similar stats, except the Privateer having the coastal raid ability. Their respective upgrades, however, are quite different. From this point onward, you can think of Battleship and Missile Cruiser as siege units (they have accessible Promotion (Civ6).pngs that help deal damage to District (Civ6).pngs, but low Civ6StrengthIcon.png Combat Strength means they are very vulnerable on defense) and Submarine and Nuclear Submarine as ranged units (they have accessible Promotion (Civ6).pngs that help deal damage and outmaneuver other naval units, ignore zone of control, and high melee Civ6StrengthIcon.png Combat Strength to resist returning damage). Therefore, Submarines are surprisingly good at killing Battleships and other naval units. The Civ6StrengthIcon.png Combat Strength gap is even wider between Nuclear Submarine and Missile Cruiser. This makes Naval Raider units less of "raiders" but more of ranged units and makes Naval Ranged units actually more of siege units. Please note that Naval Ranged units still suffer from 50% damage penalty against Walls and Urban Defenses, but they do not suffer from the extra -17 Civ6RangedStrength.png Ranged Strength, so they are good at attacking cities but they cannot completely replace land siege units.....

Considering wresting control of the sea is not that important anymore, your navy should focus on helping your land army capture coastal cities faster. While Submarines are unlocked at the same time as Battleships, in terms of capturing cities, Submarines pale in comparison.....

The best selling point of Battleships is that they have a Civ6Range.png Range of 3, meaning they can hit targets farther inland. In game, 3 tiles is the maximum distance that you can settle from the Coast while still being able to build a Harbor. Meanwhile, Submarines only have a Civ6Range.png Range of 2, meaning tactical settling can render this unit useless.....

Battleships have Promotion (Civ6).pngs that help with sieging, while Submarines do not. With Homing Torpedoes and Wolfpack, Submarines have much greater damage-dealing potential against other naval units than even Battleships with Line of Battle (i.e. two attacks at 85 Civ6RangedStrength.png Ranged Strength vs. one attack at 77 Civ6RangedStrength.png Ranged Strength), though their short Civ6Range.png Range makes it more difficult and time-consuming to level them up.....

Submarines have 2 less Civ6Movement.png Movement than Battleships (i.e. are 40% slower). When thinking of naval warfare as land warfare waged solely on flat land, there is a great emphasis on maneuverability and reach, in both of which the Submarines are outclassed by the Battleships....