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100

The _____ or ______ is a system for physically transporting postcards, letters, and parcels.

Double points for both answers 

Mail, Post

100

_______ is a racket sport that is played either individually against a single opponent (singles) or between two teams of two players each (doubles). Each player uses a ______ racket strung with a cord to strike a hollow rubber ball covered with felt over or around a net and into the opponent's court.

Tennis

100

________ is the power or right to speak, act and change as one wants without hindrance or restraint.

Freedom / Liberty

200

_______ (Bos taurus) are large, domesticated, bovid ungulates widely kept as livestock. They are prominent modern members of the subfamily Bovinae and the most widespread species of the genus Bos.

Cattle / Cows / Bulls

200

A ________ is a device consisting of an elastic but largely rigid material (typically metal) bent or molded into a form (especially a coil) that can return into shape after being compressed or extended. 

Spring

200

________ are small hand tools used for grasping objects too small to be easily handled with the human fingers.

Tweezers

300

_________ is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data

Statistics

300

A _________ is a meeting, often lasting a few days, which is organized on a particular subject, or to bring together people who have a common interest. _________ can be used as a form of group decision-making, although discussion, not always decisions, is the primary purpose of __________.

Conference

300

________ is a fighting technique based on throws, trips, sweeps, clinch fighting, ground fighting and submission holds.

Grappling

400

A _______ _________ is a unique identifier used to uniquely identify an item, and is usually assigned incrementally or sequentially.

Serial Number

400

_________ is a country in the southern half of South America. ________ covers an area of 2,780,400 km2 (1,073,500 sq mi) making it the second-largest country in South America after Brazil, the fourth-largest country in the Americas, and the eighth-largest country in the world.

Argentina

400

The ______ are a group of traditionalist Anabaptist Christian church fellowships with Swiss and Alsatian origins. As they maintain a degree of separation from surrounding populations, and hold their faith in common, the ______ have been described by certain scholars as an ethnoreligious group, combining features of an ethnicity and a Christian denomination.

Amish

500

__________ , also known as the ________ system, was a combination of legal, economic, military, cultural, and political customs that flourished in medieval Europe from the 9th to 15th centuries. Broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

Feudalism / Feudal

500

The English word _______ is both an adjective and a noun, and it is generally used to mean vigorously active, combative and/or aggressive, especially in support of a cause, as in "_______ reformers".

Militant

500

A _______ is any body of troops stationed in a particular location, originally to guard it.

Garrison