What technology was outlawed by most countries following World War I? A) Chemical warfare
B) Tanks
C) Submarine warfare
D) Zepplins

chemical warfare

Explanation: Chemical Warfare was outlawed by most countries after the end of World War 1. Later, in World War 2, these same countries that banned them after World War 1 did not use them after World War 2.

zheng he was a chinese explorer who lead seven great voyages on behalf of the chinese emperor. his seven total voyages were diplomatic, military, and trading ventures, and lasted from 1405 – 1433. however, most historians agree their main purpose was to promote the glory of ming dynasty china.

explanation:

studies show tha in 7.5 billion years from now, the expanding sun will engulf, and destroy, the earth.