10 Gigabit Ethernet. 10 Gigabit Ethernet is the latest generation and delivers a data rate of 10 Gbit/s (10,000 Mbit/s), and a fiber optic or twisted pair cable can be used. 10GBASE-LX4, 10GBASE-ER and 10GBASE-SR based on an optical fiber cable can be used to bridge distances of up to 10,000 m (6.2 miles).
Endogamy is the practice of marrying within a specific ethnic group, class, or social group, rejecting others on such a basis as being unsuitable for marriage or for other close personal relationships.
Endogamy encourages group affiliation and bonding. It is a common practice among displanted cultures attempting to make roots in new countries as it encourages group solidarity and ensures greater control over group resources (which may be important to preserve where a group is attempting to establish itself within an alien culture).