Which characteristics are evidence of the olmec civilization’s advanced agricultural system? check all that apply. irrigation growing crops industrial machinery permanent settlements food surpluses chemical fertilizers

The evidence of the Olmec civilization’s advanced agricultural system are:  

Irrigation growing crops: Olmec civilization implemented irrigation systems in the coastal areas of the Gulf of Mexico in order to grow crops such as beans and corn.

Food surpluses: As they harvested the land twice a year, they generated food surpluses for the community. At the same time, food surpluses was possible due to the collection of plant food, sea food, among others.

Permanent settlements: Olmec civilization had permanents settlements with three main sities: San Lorenzo, La Venta and Laguna Los Cerros.  

irrigation  

growing crops

permanent settlements

food surpluses

union blockade

explanation:

the union blockade in the american civil war was a naval strategy by the united states to prevent the confederacy from trading.

the blockade was proclaimed by president abraham lincoln in april 1861, and required the monitoring of 3,500 miles (5,600 km) of atlantic and gulf coastline, including 12 major ports, notably new orleans and mobile. those blockade runners fast enough to evade the union navy could only carry a small fraction of the supplies needed. they were operated largely by british citizens, making use of neutral ports such as havana, nassau and bermuda. the union commissioned around 500 ships, which destroyed or captured about 1,500 blockade runners over the course of the war.

most drivers errors for every 20 decisions they make while driving.

explanation:

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