What they have in common is the fact that they played important roles in gaining their countries independence from Spain. Marti was instrumental in Cuba's independence and Aguinado in the Philippines' Francisco "Pancho" Villa was a revolutionary who rebelled against the Mexican government. He eventually captured the city of Juarez in 1911. Jose Marti was a revolutionary who led the people of Cuba to fight for their independence. Emilio Aguinaldo wanted independence for the Philippines from the United States.
Gutenburg's printing press made books cheaper and available to a larger variety of people. Before the printing press, books were very hard to make and they took a long time to produce.
The House is responsible for deciding whether the official is guilty and should be removed the office. They vote on whether the official should be impeached or not. It is the House who conducts the actual impeachment process.