Explorers were able to take long and far trips across the ocean because of? fast !

Early navigation relayed on mariner's ability to read the stars, which were not always exact and led to failure, discretion and less disposition to explore.

The Renaissance created an intellectual ambiance that promoted exploration, bringing massive interest in science, ergo scientific methods made navigation more exact and safer while traveling by ship.

Exploration was enabled by the evolution and development of geography, the development of navigational tools such as compasses, accurate maps, sea charts, and the scientific advancement in vessel designs.

Thus "explorers were able to take long and far trips across the ocean because of the development of navigational tools".

The new technological innovation that allowed explorers to travel further and longer across the ocean was the caravel, invented by Portugual’s Prince Henrique around 1400’s.

Before it the explorers were using ships with one single mast and weighting around 25 tons. Caravels were small ships with two, three and four-masted, made with a shallow keel that helped sailing windward and faster, which allowed the explorers to take long and far trips.

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

b) he seized power from the directory and appointed himself emperor

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