An atlantic crossing by boat from england to new england took 60-80 days in the 18th century. in the late 19th century the voyage took less than a week. how do you think these time differences for travel might have impacted the spread of infectious diseases from europe to the americas in the 18th versus the 19th centuries?

i think the answer is gold im not entirely sure

a chain link fence because there so tiny even my albino donkey can't get out

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.