These alliances that took place before World War 1 in a way started the war. For an example, Germany was in an alliance with Hungary and when they declared war against Serbia, Germany had to fight with them, and so on, finally creating World War 1. Within weeks, Germany declared war with other countries that declared war with others, creating a "domino effect" which just means that most countries just started fighting with one another, either because they declared war with them or because their allies did.
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The development of the efficient agricultural practices including understanding the nile rivers flooding patterns where they grew their crops as it has the rich black soil changed Egyptians work life through efficient practices in agriculture that made the workforce available for other ventures.
For the federal government to take actions that are not necessarily written.
The advice given to those affected by the potato blight bordered on the absurd. One scientist advised people to get hold of chloric acid and manganese dioxide. This mixture should have been been added to salt and applied to the diseased area of the potato.