They were called abolitionists. <span />
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.
In the Europe of 1800's, the beliefs displayed in this question could be labeled as follows:
Conservative: The government should be led by a monarch with legitimacy from God; the government should mantain stability through a social class system. The explanation is that, those who call themselfs conservatives do so because they are in favor to keep things the way they are, manteining the status quo; the type of government that ruled Europe in 1800 was the monarchy, and they believed that stability could be reached by a social class system, the royal family and the plebeians.
Liberal: People should be able to work their way up the social ladder; the government should emphasize citizens' rights as listed in a constitution. Liberals, in general, believe and praise freedom for all people, and often the government's intervention in society is questioned; some say that the government's role should be smaller, intervening only in crucial questions, like the assurance of rights, while others believe that the government should have a central power figure.
<span>Henry fords production methods affected the number of cars produced by increasing it.</span>