Answer:
Mountain Ranges.
Explanation:
The natural boundary which shielded the Indus and Ganges Valleys from invaders to the north was mountain ranges. The world's tallest mountains that stood on the north of the Indua valley served as a guard to protect the Indus and Ganges valley from being invaded.
<u>Indus Valley is surrounded by the world's tallest mountain range of </u><u>the Hindu Kush, the Karakorum, and the Himalayas in the north.</u><u> Indus and Ganges valley form the most fertile landforms.</u>
Thus the correct answer is that the natural boundary of mountain ranges guarded Indus and Ganges Valley from being invaded.
The answer is: [D]: " 4 (FOUR) " .
____________________________________________
There are four (4) components of the "K.T. strategy" {"knowledge-transition strategy"}.
____________________________________________
Before the Renaissance, during the Middle Ages, people relied solely on the Catholic church for their information about the world. They based their facts on the Bible and what religious figures told them. During the Renaissance, a more secular way of thinking developed. As the printing press grew, more people became literate and were able to interpret the Bible for themselves. This led to the creation of new religions and theories about science. People began to challenge the old social order and authorities and began to question the morals and motives of the seemingly corrupt Catholic church.
The calendar that is used for secular purposes in the industrial world today is the <u>Gregorian calendar</u>.
<h3>What is the Gregorian calendar?</h3>
This most common calendar is also called New Style calendar which uses the solar dating system and now in general use. The Gregorian calendar was proclaimed in 1582 by Pope Gregory XIII as a reform of the Julian calendar.
In this calendar, the solar year comprised 365 1/4 days and the intercalation of a “leap day” every four years was intended to maintain correspondence between the calendar and the seasons. Also, there is a slight inaccuracy in the measurement which caused the calendar dates of the seasons to regress almost one day per century.
Read more about Gregorian calendar
brainly.com/question/17171030
#SPJ1
