Multiple factors were involved in the decision of exploration of Mars.
Mars is similar to Earth in size and it is the next planet. Moreover, evidence was present to suggest that liquid water existed, and may possibly still exist, on Mars. All of these factors led to the planet's exploration.
<span> that the Federal government aid in the construction of roads and canals to improve transportation to and from the West
</span><span>The British blockade of the coast had underscored the necessity of rapid means of internal transportation; Calhoun proposed a system of great permanent roads to encourage domestic manufacturing.</span>
D. Catherine the Great. She was a German princess before becoming the emperoress of Russia
