Six years before Vasco da Gama made his famous voyage to India around Africa and opened a new trade route for the Portuguese merchants, another seaman had formed and carried out a much bolder plan. This was Christopher Columbus, and his plan was to sail directly west from Europe into the unknown ocean in search of new islands and the coast of Asia. Columbus, who was a native of Genoa in Italy, had followed his younger brother to Portugal. Both were probably led there by the fame of Prince Henry's explorations.

The brothers became very skillful in making maps and charts for the Portuguese. They also frequently sailed with them on their expeditions along the coast of Africa. All the early associations of Columbus were with men interested in voyages of discovery, and particularly with those engaged in the daring search for a sea route to India.

Adapted from Introductory American History, by Henry Eldridge Bourne and Elbert Jay Benton (1912)

What is the meaning of the word "expeditions" as it is used in this passage?

     John Scott and Philip Lannes walked together down a great boulevard of Paris. The young American's heart was filled with grief and anger. The Frenchman felt the same grief, but mingled with it was a fierce, burning passion, so deep and bitter that it took a much stronger word than anger to describe it.

      Both had heard that morning the mutter of cannon on the horizon, and they knew the German conquerors were advancing. They were always advancing. Nothing had stopped them. The metal and masonry of the defenses at Liège had crumbled before their huge guns like china breaking under stone. The giant shells had scooped out the forts at Maubeuge, Maubeuge the untakable, as if they had been mere eggshells, and the mighty Teutonic host came on, almost without a check.

The Forest of the Swords: A Story of Paris and the Marne, by Joseph A. Altshelter (1915)

What is the meaning of the word "boulevard?"

Some species of sharks grow to an enormous size, often weighing from one to four thousand pounds each. The skin of the shark is rough, and is used for polishing wood, ivory, &c.; that of one species is manufactured into an article called shagreen: spectacle-cases are made of it. The white shark is the sailor's worst enemy: he has five rows of wedge-shaped teeth, which are notched like a saw: when the animal is at rest they are flat in his mouth, but when about to seize his prey they are erected by a set of muscles which join them to the jaw. His mouth is so situated under the head that he is obliged to turn himself on one side before he can grasp any thing with those enormous jaws.

Adapted from Stories of the Ocean by Volney Beckner (1852)

The word "seize," as it is used in this passage, most nearly means ________________.