现代社会保障制度最早出现于西欧国家，迄今已经有百余年的历史。阅读下列材料：

材料一：俾斯麦在1881年时就看到，光用“鞭子政策”对付工人是很难奏效的，需要辅以“糖果政策”改善工人处境。80年代初，德国规定6天工作制，按时给工人支付货币工资。1889年颁布残度和老年保险法，保险费由国家、雇主和工人缴纳。到l900年，领社会保险费的人数达500万人。俾斯麦的社会立法开资本主又国家之先河，具有深远的社会意义。

——摘偏自丁建弘《德国通史》

材料二：大危机促使美国政府致力于社会保障事业。1933年，在罗斯福的倡议下国会通过了联邦紧急救济法案，拨款5亿美元补助各州进行劳劝救济和失业救济。1935年通过的社会保障法是第一个由联邦政府承担义务的、以解决老年和失业问题为主体的社会保障立法。二战后美国联邦政府举办的社会保障事业发展很快，从1950年至1980年，联邦政府用于社会保障项目的开支每年平均递增11．8％。

——摘编自陈宝森《美国经济与政府政策：从罗斯福到里根》

材料三：2O世纪8O年代，英国撒切尔政府福利改革的主要措施有：把与社会福利有关的部分资产，如医院等出售给私人或私营部门；将某些社会福利项目的出资与管理责任交给私人组织；削减国家提供的福利。但是，这些并不意味看国家责任的减弱，如通过对地方政府履行职责情况和财务状况的审计、检查和评估等措施强化对它们的约束与控制。

——摘编自闵凡祥《国家与社会：英国福利观念的变迁与撒切尔政府社会福利改革研究》

请回答：

    Lots of people buy books and products from Amazon, an online seller. They offer and pay over the Internet and the books are shipped through the mail or a delivery service like FedEx.

    One day, people could get their Amazon deliveries from an “unmanned aerial vehicle”—a timely vehicle that looks like a toy helicopter. And instead of waiting days to get the parcel, it could be at the buyer's home in half an hour or less. The company is working on a fleet of tiny vehicles they call “Prime Air”. The vehicles are also known as “octocopters”. On their website, Amazon says, “One day, Prime Air Vehicles will be as normal as seeing a mail trucks on the road today.”

    The U.S.'s Federal Aviation Administration (FAA) is working on safety regulations for unmanned flying vehicles like the Prime Air copters. Those regulations will make sure the copters are able to fly safely where they need to go. Once the FAA has put its rules in place, which could be as early as 2016, Amazon will be ready with its fleet of tiny flyers. The process could take as many as five years.

    The new delivery service would likely be available only in the United States, at first. The copters the company is testing now can handle packages up to five pounds (2.3kg) and they have a range of 10 miles (16 kilometers).

    Other companies are also looking at using unmanned flying vehicles to deliver their products. For instance, Domino's Pizza in the U.K. released a video showing a “DomiCopter”, delivering a pizza. That video may have been a publicity stunt（噱头）. In any case, just like Prime Air's octocopters, the DomiCopters don't have clearance（许可）to take off just yet.