Questions

A large initial letter that drops below the first line of a paragraph, usually used as a decorative element at the beginning of a section or chapter of a book.

Masala bonds are bonds issued outside India but denominated in Indian Rupees, rather than the local currency. Kerala Infrastructure Investment Fund Board have listed 21.5 billion rupees ($305 million) of Masala bonds on the London Stock Exchange.

Rig veda   =  ayurveda

Yajur veda =  dhanurvedha

Samavedha  =  gandharvavedha

Atharvaveda  =  shilpa veda

From the history,

The Erie Canal was completed in 1800's

The signing of the Declaration of Independence in 1776 and after that the American Revolution was started in the same 1776.

The Iroquios Confederacy was formed early when the Europeans first began comonizing, may be early in 1600's.

So, from the above data of history, Iroquois tribes formed the Iroquois Confederacy was the event that occured first among the options.