Explanation

The Kushan tribe originally settled in Northwest China.

They were part of the Yuezhi confederation, a group of tribes.

The Yuezhi migrated from the Chinese borderlands, specifically modern Gansu and Xinjiang.

After their migration, they established the Kushan Empire in regions including Northwest India, Afghanistan, and parts of Central Asia.

Explanation

The Arabian Peninsula is dominated by vast deserts, including the Rub' al Khali (Empty Quarter) and the Nafud Desert.

It has an arid climate with limited vegetation, except for oases and coastal areas.

Explanation

A regulation volleyball court is 59 feet long by 29.5 feet wide (18 meters by 9 meters).

In inches, this is 708 inches long by 354 inches wide.

Explanation

The Central Asian Republics (including Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan) joined the Economic Cooperation Organization (ECO) in 1992.

This expansion occurred after the dissolution of the Soviet Union, significantly broadening ECO's regional scope.

Explanation

An interfluve is the land area between two adjacent rivers or streams, typically located between their watersheds.

It is the elevated region that separates the drainage basins of two rivers.

Explanation

The Regional Cooperation for Development (RCD) was renamed Economic Cooperation Organization (ECO) in 1985.

It aiming to promote economic, technical, and cultural cooperation among member states in Asia.

RCD was established on: 21 July, 1964

RCD was dissolved in: 1979

RCD stand for Regional Cooperation for Development

RCD: Established by Iran, Pakistan and Turkey

RCD headquarters: Iran

Explanation

A solar year is approximately 365.25 days, which accounts for Earth's full orbit around the sun.

The extra ¼ day each year is why we have a leap year every 4 years.

The solar year 365 days 5 hours 48 minutes 46 seconds, also called tropical year, or year of the seasons.

Explanation

The 4×100 meter relay was first introduced at the 1912 Stockholm (Sweden) Olympics for men.

It became a standard Olympic track event from that year onward.

Explanation

The internal diameter of the discus throw circle is 2.5 meters (8.2 feet). 

This size ensures uniformity in competitions and proper technique for discus throwers.

Explanation

Table tennis balls are usually white or yellow for better visibility against different table and background colors.

These colors are approved by the International Table Tennis Federation (ITTF) for official play.