Answer:
Germany declared war on Russia because they wanted to also declare war on the French. In an audacious move called the Schlieffen Plan Germany had to attack Russia to delay the progress of their steam rail expansion then while the Russians are distracted attack France. Germany knew for certain if they allowed Russia to complete their rail connections the Russian with their superior numbers would overrun them.
Explanation:
Marcus Garvey is best known for his activism.
Plumbing was more of a luxury/comfort for people that also made their life easier. Baths were common and were usually taken while standing up in public baths. Bathing was also used for ceremonial purposes in religious services and rituals. Toilets were only limited to those who could afford them, so the upper class. Lower classes used urns or sump pots. Upper class toilets were stacked bricks with a hole that would drain out. Plumbing on the 2nd floor though was led by pipes to the streets. Limestone was used to prevent leakage.