What is a requirement of all citizens in the united states? everyone must register with the selective service system. everyone must be available to serve on a jury in response to a summons. everyone must cast a vote in all municipal, state, and federal elections. everyone must volunteer for community service.

The correct answer everyone must be available to serve on a jury in response to a summons.

Only males have to enroll in the Selective Service System but women do not need to sign up.

Voting is something that 18 year old citizens have the abiltity to but are not required by law to vote.

There is no legal requirement for citizens to complete community service.

the captain of a steam ship naturally chooses the shortest route to his destination. since a sailing ship is usually pushed by winds and currents, its captain must find a route where the wind will probably blow in the right direction. tacking, i.e. using contrary wind to pull (sic) the sails, was always possible but wasted time because of the zigzagging required, and this would significantly delay long voyages. the early european explorers were not only looking for new lands. they also had to discover the pattern of winds and currents that would carry them where they wanted to go. during the age of sail winds and currents determined trade routes and therefore influenced european imperialism and modern political geography. for an outline to the main wind systems see global wind patterns.

pilotage or cabotage, in one sense, is the art of sailing along the coast using known landmarks. navigation, in one sense, is the art of sailing long distances out of sight of land.[1] although the polynesians were able to sail the pacific (with great difficulty) and people regularly sailed north and south across the mediterranean, before the time of columbus nearly all sailing was coastal pilotage

        it is some were in here? ///

norsemen from northern countries had made earlier journeys