According to the structure of the planet they are divided into terrestrial and Jovian. Terrestrial planets have a solid, rocky surface, are relatively high densities, slow to rotate, lack a ring, and have little or no satellites.
They include all inland planets: Mercury, Earth and Mars. Of these Venus, Earth and Mars have atmosphere, while Mercury is practically gone. It is so thin that we cannot speak of it in our earthly sense.
The Jovian planets are similar to Jupiter. They are gaseous gins composed mainly of hydrogen and helium, they are low in density, have fast rotation, rings and many satellites and probably a little solid core. These are Jupiter, Saturn, Uranus, and Neptune.
As for the largest number of ports, i'm pretty sure that the British and the French held the most of it. I'm not sure about which one is the least though, but it won't be the country that had a strong military empire.
The California miners found silver in the blue sand and sticky soil which caused problems because they were primarily looking for gold and there was a lot of silver in the way.
